diff --git a/google/cloud/appengine_admin_v1/services/applications/client.py b/google/cloud/appengine_admin_v1/services/applications/client.py
index 6c8e925..b43da0c 100644
--- a/google/cloud/appengine_admin_v1/services/applications/client.py
+++ b/google/cloud/appengine_admin_v1/services/applications/client.py
@@ -17,7 +17,7 @@
 from distutils import util
 import os
 import re
-from typing import Callable, Dict, Optional, Sequence, Tuple, Type, Union
+from typing import Dict, Optional, Sequence, Tuple, Type, Union
 import pkg_resources
 
 from google.api_core import client_options as client_options_lib  # type: ignore
@@ -338,7 +338,7 @@ def __init__(
 
     def get_application(
         self,
-        request: appengine.GetApplicationRequest = None,
+        request: Union[appengine.GetApplicationRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -347,7 +347,7 @@ def get_application(
         r"""Gets information about an application.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.GetApplicationRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.GetApplicationRequest, dict]):
                 The request object. Request message for
                 `Applications.GetApplication`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -389,7 +389,7 @@ def get_application(
 
     def create_application(
         self,
-        request: appengine.CreateApplicationRequest = None,
+        request: Union[appengine.CreateApplicationRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -408,7 +408,7 @@ def create_application(
         Billing <https://cloud.google.com/appengine/docs/standard/python/console/>`__.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.CreateApplicationRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.CreateApplicationRequest, dict]):
                 The request object. Request message for
                 `Applications.CreateApplication`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -453,7 +453,7 @@ def create_application(
 
     def update_application(
         self,
-        request: appengine.UpdateApplicationRequest = None,
+        request: Union[appengine.UpdateApplicationRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -468,7 +468,7 @@ def update_application(
            the application.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.UpdateApplicationRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.UpdateApplicationRequest, dict]):
                 The request object. Request message for
                 `Applications.UpdateApplication`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -519,7 +519,7 @@ def update_application(
 
     def repair_application(
         self,
-        request: appengine.RepairApplicationRequest = None,
+        request: Union[appengine.RepairApplicationRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -538,7 +538,7 @@ def repair_application(
         Cloud Console Activity Log.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.RepairApplicationRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.RepairApplicationRequest, dict]):
                 The request object. Request message for
                 'Applications.RepairApplication'.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
diff --git a/google/cloud/appengine_admin_v1/services/applications/transports/base.py b/google/cloud/appengine_admin_v1/services/applications/transports/base.py
index a0de499..91338b9 100644
--- a/google/cloud/appengine_admin_v1/services/applications/transports/base.py
+++ b/google/cloud/appengine_admin_v1/services/applications/transports/base.py
@@ -124,7 +124,7 @@ def __init__(
                 **scopes_kwargs, quota_project_id=quota_project_id
             )
 
-        # If the credentials is service account credentials, then always try to use self signed JWT.
+        # If the credentials are service account credentials, then always try to use self signed JWT.
         if (
             always_use_jwt_access
             and isinstance(credentials, service_account.Credentials)
diff --git a/google/cloud/appengine_admin_v1/services/applications/transports/grpc.py b/google/cloud/appengine_admin_v1/services/applications/transports/grpc.py
index bc81f85..7e79a41 100644
--- a/google/cloud/appengine_admin_v1/services/applications/transports/grpc.py
+++ b/google/cloud/appengine_admin_v1/services/applications/transports/grpc.py
@@ -83,16 +83,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/appengine_admin_v1/services/applications/transports/grpc_asyncio.py b/google/cloud/appengine_admin_v1/services/applications/transports/grpc_asyncio.py
index d9264e4..1a03ec4 100644
--- a/google/cloud/appengine_admin_v1/services/applications/transports/grpc_asyncio.py
+++ b/google/cloud/appengine_admin_v1/services/applications/transports/grpc_asyncio.py
@@ -130,16 +130,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/appengine_admin_v1/services/authorized_certificates/client.py b/google/cloud/appengine_admin_v1/services/authorized_certificates/client.py
index 8f67075..02be3a5 100644
--- a/google/cloud/appengine_admin_v1/services/authorized_certificates/client.py
+++ b/google/cloud/appengine_admin_v1/services/authorized_certificates/client.py
@@ -17,7 +17,7 @@
 from distutils import util
 import os
 import re
-from typing import Callable, Dict, Optional, Sequence, Tuple, Type, Union
+from typing import Dict, Optional, Sequence, Tuple, Type, Union
 import pkg_resources
 
 from google.api_core import client_options as client_options_lib  # type: ignore
@@ -343,7 +343,7 @@ def __init__(
 
     def list_authorized_certificates(
         self,
-        request: appengine.ListAuthorizedCertificatesRequest = None,
+        request: Union[appengine.ListAuthorizedCertificatesRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -353,7 +353,7 @@ def list_authorized_certificates(
         administer.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.ListAuthorizedCertificatesRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.ListAuthorizedCertificatesRequest, dict]):
                 The request object. Request message for
                 `AuthorizedCertificates.ListAuthorizedCertificates`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -405,7 +405,7 @@ def list_authorized_certificates(
 
     def get_authorized_certificate(
         self,
-        request: appengine.GetAuthorizedCertificateRequest = None,
+        request: Union[appengine.GetAuthorizedCertificateRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -414,7 +414,7 @@ def get_authorized_certificate(
         r"""Gets the specified SSL certificate.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.GetAuthorizedCertificateRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.GetAuthorizedCertificateRequest, dict]):
                 The request object. Request message for
                 `AuthorizedCertificates.GetAuthorizedCertificate`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -460,7 +460,7 @@ def get_authorized_certificate(
 
     def create_authorized_certificate(
         self,
-        request: appengine.CreateAuthorizedCertificateRequest = None,
+        request: Union[appengine.CreateAuthorizedCertificateRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -469,7 +469,7 @@ def create_authorized_certificate(
         r"""Uploads the specified SSL certificate.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.CreateAuthorizedCertificateRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.CreateAuthorizedCertificateRequest, dict]):
                 The request object. Request message for
                 `AuthorizedCertificates.CreateAuthorizedCertificate`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -515,7 +515,7 @@ def create_authorized_certificate(
 
     def update_authorized_certificate(
         self,
-        request: appengine.UpdateAuthorizedCertificateRequest = None,
+        request: Union[appengine.UpdateAuthorizedCertificateRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -529,7 +529,7 @@ def update_authorized_certificate(
         updated.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.UpdateAuthorizedCertificateRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.UpdateAuthorizedCertificateRequest, dict]):
                 The request object. Request message for
                 `AuthorizedCertificates.UpdateAuthorizedCertificate`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -575,7 +575,7 @@ def update_authorized_certificate(
 
     def delete_authorized_certificate(
         self,
-        request: appengine.DeleteAuthorizedCertificateRequest = None,
+        request: Union[appengine.DeleteAuthorizedCertificateRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -584,7 +584,7 @@ def delete_authorized_certificate(
         r"""Deletes the specified SSL certificate.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.DeleteAuthorizedCertificateRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.DeleteAuthorizedCertificateRequest, dict]):
                 The request object. Request message for
                 `AuthorizedCertificates.DeleteAuthorizedCertificate`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
diff --git a/google/cloud/appengine_admin_v1/services/authorized_certificates/transports/base.py b/google/cloud/appengine_admin_v1/services/authorized_certificates/transports/base.py
index 5a1d2f9..1ae962d 100644
--- a/google/cloud/appengine_admin_v1/services/authorized_certificates/transports/base.py
+++ b/google/cloud/appengine_admin_v1/services/authorized_certificates/transports/base.py
@@ -123,7 +123,7 @@ def __init__(
                 **scopes_kwargs, quota_project_id=quota_project_id
             )
 
-        # If the credentials is service account credentials, then always try to use self signed JWT.
+        # If the credentials are service account credentials, then always try to use self signed JWT.
         if (
             always_use_jwt_access
             and isinstance(credentials, service_account.Credentials)
diff --git a/google/cloud/appengine_admin_v1/services/authorized_certificates/transports/grpc.py b/google/cloud/appengine_admin_v1/services/authorized_certificates/transports/grpc.py
index a7f20ab..8f86bf8 100644
--- a/google/cloud/appengine_admin_v1/services/authorized_certificates/transports/grpc.py
+++ b/google/cloud/appengine_admin_v1/services/authorized_certificates/transports/grpc.py
@@ -84,16 +84,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/appengine_admin_v1/services/authorized_certificates/transports/grpc_asyncio.py b/google/cloud/appengine_admin_v1/services/authorized_certificates/transports/grpc_asyncio.py
index 8ab6414..9b0d7ea 100644
--- a/google/cloud/appengine_admin_v1/services/authorized_certificates/transports/grpc_asyncio.py
+++ b/google/cloud/appengine_admin_v1/services/authorized_certificates/transports/grpc_asyncio.py
@@ -131,16 +131,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/appengine_admin_v1/services/authorized_domains/client.py b/google/cloud/appengine_admin_v1/services/authorized_domains/client.py
index 545b69d..4d16281 100644
--- a/google/cloud/appengine_admin_v1/services/authorized_domains/client.py
+++ b/google/cloud/appengine_admin_v1/services/authorized_domains/client.py
@@ -17,7 +17,7 @@
 from distutils import util
 import os
 import re
-from typing import Callable, Dict, Optional, Sequence, Tuple, Type, Union
+from typing import Dict, Optional, Sequence, Tuple, Type, Union
 import pkg_resources
 
 from google.api_core import client_options as client_options_lib  # type: ignore
@@ -342,7 +342,7 @@ def __init__(
 
     def list_authorized_domains(
         self,
-        request: appengine.ListAuthorizedDomainsRequest = None,
+        request: Union[appengine.ListAuthorizedDomainsRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -352,7 +352,7 @@ def list_authorized_domains(
         administer.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.ListAuthorizedDomainsRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.ListAuthorizedDomainsRequest, dict]):
                 The request object. Request message for
                 `AuthorizedDomains.ListAuthorizedDomains`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
diff --git a/google/cloud/appengine_admin_v1/services/authorized_domains/transports/base.py b/google/cloud/appengine_admin_v1/services/authorized_domains/transports/base.py
index cb57d63..22ebc61 100644
--- a/google/cloud/appengine_admin_v1/services/authorized_domains/transports/base.py
+++ b/google/cloud/appengine_admin_v1/services/authorized_domains/transports/base.py
@@ -121,7 +121,7 @@ def __init__(
                 **scopes_kwargs, quota_project_id=quota_project_id
             )
 
-        # If the credentials is service account credentials, then always try to use self signed JWT.
+        # If the credentials are service account credentials, then always try to use self signed JWT.
         if (
             always_use_jwt_access
             and isinstance(credentials, service_account.Credentials)
diff --git a/google/cloud/appengine_admin_v1/services/authorized_domains/transports/grpc.py b/google/cloud/appengine_admin_v1/services/authorized_domains/transports/grpc.py
index 82d51bb..5095922 100644
--- a/google/cloud/appengine_admin_v1/services/authorized_domains/transports/grpc.py
+++ b/google/cloud/appengine_admin_v1/services/authorized_domains/transports/grpc.py
@@ -82,16 +82,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/appengine_admin_v1/services/authorized_domains/transports/grpc_asyncio.py b/google/cloud/appengine_admin_v1/services/authorized_domains/transports/grpc_asyncio.py
index 1848cae..f06afc5 100644
--- a/google/cloud/appengine_admin_v1/services/authorized_domains/transports/grpc_asyncio.py
+++ b/google/cloud/appengine_admin_v1/services/authorized_domains/transports/grpc_asyncio.py
@@ -129,16 +129,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/appengine_admin_v1/services/domain_mappings/client.py b/google/cloud/appengine_admin_v1/services/domain_mappings/client.py
index 8032b46..a3c7a4c 100644
--- a/google/cloud/appengine_admin_v1/services/domain_mappings/client.py
+++ b/google/cloud/appengine_admin_v1/services/domain_mappings/client.py
@@ -17,7 +17,7 @@
 from distutils import util
 import os
 import re
-from typing import Callable, Dict, Optional, Sequence, Tuple, Type, Union
+from typing import Dict, Optional, Sequence, Tuple, Type, Union
 import pkg_resources
 
 from google.api_core import client_options as client_options_lib  # type: ignore
@@ -341,7 +341,7 @@ def __init__(
 
     def list_domain_mappings(
         self,
-        request: appengine.ListDomainMappingsRequest = None,
+        request: Union[appengine.ListDomainMappingsRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -350,7 +350,7 @@ def list_domain_mappings(
         r"""Lists the domain mappings on an application.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.ListDomainMappingsRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.ListDomainMappingsRequest, dict]):
                 The request object. Request message for
                 `DomainMappings.ListDomainMappings`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -399,7 +399,7 @@ def list_domain_mappings(
 
     def get_domain_mapping(
         self,
-        request: appengine.GetDomainMappingRequest = None,
+        request: Union[appengine.GetDomainMappingRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -408,7 +408,7 @@ def get_domain_mapping(
         r"""Gets the specified domain mapping.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.GetDomainMappingRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.GetDomainMappingRequest, dict]):
                 The request object. Request message for
                 `DomainMappings.GetDomainMapping`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -449,7 +449,7 @@ def get_domain_mapping(
 
     def create_domain_mapping(
         self,
-        request: appengine.CreateDomainMappingRequest = None,
+        request: Union[appengine.CreateDomainMappingRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -461,7 +461,7 @@ def create_domain_mapping(
         ```AuthorizedDomains.ListAuthorizedDomains`` <>`__.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.CreateDomainMappingRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.CreateDomainMappingRequest, dict]):
                 The request object. Request message for
                 `DomainMappings.CreateDomainMapping`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -513,7 +513,7 @@ def create_domain_mapping(
 
     def update_domain_mapping(
         self,
-        request: appengine.UpdateDomainMappingRequest = None,
+        request: Union[appengine.UpdateDomainMappingRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -526,7 +526,7 @@ def update_domain_mapping(
         ``DomainMapping`` resource.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.UpdateDomainMappingRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.UpdateDomainMappingRequest, dict]):
                 The request object. Request message for
                 `DomainMappings.UpdateDomainMapping`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -578,7 +578,7 @@ def update_domain_mapping(
 
     def delete_domain_mapping(
         self,
-        request: appengine.DeleteDomainMappingRequest = None,
+        request: Union[appengine.DeleteDomainMappingRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -589,7 +589,7 @@ def delete_domain_mapping(
         ``DomainMapping`` resource.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.DeleteDomainMappingRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.DeleteDomainMappingRequest, dict]):
                 The request object. Request message for
                 `DomainMappings.DeleteDomainMapping`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
diff --git a/google/cloud/appengine_admin_v1/services/domain_mappings/transports/base.py b/google/cloud/appengine_admin_v1/services/domain_mappings/transports/base.py
index 7d971f7..b11cc15 100644
--- a/google/cloud/appengine_admin_v1/services/domain_mappings/transports/base.py
+++ b/google/cloud/appengine_admin_v1/services/domain_mappings/transports/base.py
@@ -124,7 +124,7 @@ def __init__(
                 **scopes_kwargs, quota_project_id=quota_project_id
             )
 
-        # If the credentials is service account credentials, then always try to use self signed JWT.
+        # If the credentials are service account credentials, then always try to use self signed JWT.
         if (
             always_use_jwt_access
             and isinstance(credentials, service_account.Credentials)
diff --git a/google/cloud/appengine_admin_v1/services/domain_mappings/transports/grpc.py b/google/cloud/appengine_admin_v1/services/domain_mappings/transports/grpc.py
index e7ee590..1f89b60 100644
--- a/google/cloud/appengine_admin_v1/services/domain_mappings/transports/grpc.py
+++ b/google/cloud/appengine_admin_v1/services/domain_mappings/transports/grpc.py
@@ -83,16 +83,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/appengine_admin_v1/services/domain_mappings/transports/grpc_asyncio.py b/google/cloud/appengine_admin_v1/services/domain_mappings/transports/grpc_asyncio.py
index df14efb..46bb973 100644
--- a/google/cloud/appengine_admin_v1/services/domain_mappings/transports/grpc_asyncio.py
+++ b/google/cloud/appengine_admin_v1/services/domain_mappings/transports/grpc_asyncio.py
@@ -130,16 +130,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/appengine_admin_v1/services/firewall/client.py b/google/cloud/appengine_admin_v1/services/firewall/client.py
index eaa3159..b15645d 100644
--- a/google/cloud/appengine_admin_v1/services/firewall/client.py
+++ b/google/cloud/appengine_admin_v1/services/firewall/client.py
@@ -17,7 +17,7 @@
 from distutils import util
 import os
 import re
-from typing import Callable, Dict, Optional, Sequence, Tuple, Type, Union
+from typing import Dict, Optional, Sequence, Tuple, Type, Union
 import pkg_resources
 
 from google.api_core import client_options as client_options_lib  # type: ignore
@@ -346,7 +346,7 @@ def __init__(
 
     def list_ingress_rules(
         self,
-        request: appengine.ListIngressRulesRequest = None,
+        request: Union[appengine.ListIngressRulesRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -355,7 +355,7 @@ def list_ingress_rules(
         r"""Lists the firewall rules of an application.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.ListIngressRulesRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.ListIngressRulesRequest, dict]):
                 The request object. Request message for
                 `Firewall.ListIngressRules`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -404,7 +404,7 @@ def list_ingress_rules(
 
     def batch_update_ingress_rules(
         self,
-        request: appengine.BatchUpdateIngressRulesRequest = None,
+        request: Union[appengine.BatchUpdateIngressRulesRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -419,7 +419,7 @@ def batch_update_ingress_rules(
         end of the list.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.BatchUpdateIngressRulesRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.BatchUpdateIngressRulesRequest, dict]):
                 The request object. Request message for
                 `Firewall.BatchUpdateIngressRules`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -460,7 +460,7 @@ def batch_update_ingress_rules(
 
     def create_ingress_rule(
         self,
-        request: appengine.CreateIngressRuleRequest = None,
+        request: Union[appengine.CreateIngressRuleRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -469,7 +469,7 @@ def create_ingress_rule(
         r"""Creates a firewall rule for the application.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.CreateIngressRuleRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.CreateIngressRuleRequest, dict]):
                 The request object. Request message for
                 `Firewall.CreateIngressRule`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -512,7 +512,7 @@ def create_ingress_rule(
 
     def get_ingress_rule(
         self,
-        request: appengine.GetIngressRuleRequest = None,
+        request: Union[appengine.GetIngressRuleRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -521,7 +521,7 @@ def get_ingress_rule(
         r"""Gets the specified firewall rule.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.GetIngressRuleRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.GetIngressRuleRequest, dict]):
                 The request object. Request message for
                 `Firewall.GetIngressRule`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -564,7 +564,7 @@ def get_ingress_rule(
 
     def update_ingress_rule(
         self,
-        request: appengine.UpdateIngressRuleRequest = None,
+        request: Union[appengine.UpdateIngressRuleRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -573,7 +573,7 @@ def update_ingress_rule(
         r"""Updates the specified firewall rule.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.UpdateIngressRuleRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.UpdateIngressRuleRequest, dict]):
                 The request object. Request message for
                 `Firewall.UpdateIngressRule`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -616,7 +616,7 @@ def update_ingress_rule(
 
     def delete_ingress_rule(
         self,
-        request: appengine.DeleteIngressRuleRequest = None,
+        request: Union[appengine.DeleteIngressRuleRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -625,7 +625,7 @@ def delete_ingress_rule(
         r"""Deletes the specified firewall rule.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.DeleteIngressRuleRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.DeleteIngressRuleRequest, dict]):
                 The request object. Request message for
                 `Firewall.DeleteIngressRule`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
diff --git a/google/cloud/appengine_admin_v1/services/firewall/transports/base.py b/google/cloud/appengine_admin_v1/services/firewall/transports/base.py
index 8f2f465..04b20ea 100644
--- a/google/cloud/appengine_admin_v1/services/firewall/transports/base.py
+++ b/google/cloud/appengine_admin_v1/services/firewall/transports/base.py
@@ -123,7 +123,7 @@ def __init__(
                 **scopes_kwargs, quota_project_id=quota_project_id
             )
 
-        # If the credentials is service account credentials, then always try to use self signed JWT.
+        # If the credentials are service account credentials, then always try to use self signed JWT.
         if (
             always_use_jwt_access
             and isinstance(credentials, service_account.Credentials)
diff --git a/google/cloud/appengine_admin_v1/services/firewall/transports/grpc.py b/google/cloud/appengine_admin_v1/services/firewall/transports/grpc.py
index a20b25c..1809e0b 100644
--- a/google/cloud/appengine_admin_v1/services/firewall/transports/grpc.py
+++ b/google/cloud/appengine_admin_v1/services/firewall/transports/grpc.py
@@ -92,16 +92,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/appengine_admin_v1/services/firewall/transports/grpc_asyncio.py b/google/cloud/appengine_admin_v1/services/firewall/transports/grpc_asyncio.py
index b250cfd..75a7250 100644
--- a/google/cloud/appengine_admin_v1/services/firewall/transports/grpc_asyncio.py
+++ b/google/cloud/appengine_admin_v1/services/firewall/transports/grpc_asyncio.py
@@ -139,16 +139,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/appengine_admin_v1/services/instances/client.py b/google/cloud/appengine_admin_v1/services/instances/client.py
index 0991030..aa6f6f5 100644
--- a/google/cloud/appengine_admin_v1/services/instances/client.py
+++ b/google/cloud/appengine_admin_v1/services/instances/client.py
@@ -17,7 +17,7 @@
 from distutils import util
 import os
 import re
-from typing import Callable, Dict, Optional, Sequence, Tuple, Type, Union
+from typing import Dict, Optional, Sequence, Tuple, Type, Union
 import pkg_resources
 
 from google.api_core import client_options as client_options_lib  # type: ignore
@@ -356,7 +356,7 @@ def __init__(
 
     def list_instances(
         self,
-        request: appengine.ListInstancesRequest = None,
+        request: Union[appengine.ListInstancesRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -369,7 +369,7 @@ def list_instances(
         API <https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list>`__.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.ListInstancesRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.ListInstancesRequest, dict]):
                 The request object. Request message for
                 `Instances.ListInstances`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -418,7 +418,7 @@ def list_instances(
 
     def get_instance(
         self,
-        request: appengine.GetInstanceRequest = None,
+        request: Union[appengine.GetInstanceRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -427,7 +427,7 @@ def get_instance(
         r"""Gets instance information.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.GetInstanceRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.GetInstanceRequest, dict]):
                 The request object. Request message for
                 `Instances.GetInstance`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -469,7 +469,7 @@ def get_instance(
 
     def delete_instance(
         self,
-        request: appengine.DeleteInstanceRequest = None,
+        request: Union[appengine.DeleteInstanceRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -492,7 +492,7 @@ def delete_instance(
         method.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.DeleteInstanceRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.DeleteInstanceRequest, dict]):
                 The request object. Request message for
                 `Instances.DeleteInstance`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -554,7 +554,7 @@ def delete_instance(
 
     def debug_instance(
         self,
-        request: appengine.DebugInstanceRequest = None,
+        request: Union[appengine.DebugInstanceRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -572,7 +572,7 @@ def debug_instance(
         environment.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.DebugInstanceRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.DebugInstanceRequest, dict]):
                 The request object. Request message for
                 `Instances.DebugInstance`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
diff --git a/google/cloud/appengine_admin_v1/services/instances/transports/base.py b/google/cloud/appengine_admin_v1/services/instances/transports/base.py
index ab81cf2..af17f3d 100644
--- a/google/cloud/appengine_admin_v1/services/instances/transports/base.py
+++ b/google/cloud/appengine_admin_v1/services/instances/transports/base.py
@@ -124,7 +124,7 @@ def __init__(
                 **scopes_kwargs, quota_project_id=quota_project_id
             )
 
-        # If the credentials is service account credentials, then always try to use self signed JWT.
+        # If the credentials are service account credentials, then always try to use self signed JWT.
         if (
             always_use_jwt_access
             and isinstance(credentials, service_account.Credentials)
diff --git a/google/cloud/appengine_admin_v1/services/instances/transports/grpc.py b/google/cloud/appengine_admin_v1/services/instances/transports/grpc.py
index 905f187..7252c39 100644
--- a/google/cloud/appengine_admin_v1/services/instances/transports/grpc.py
+++ b/google/cloud/appengine_admin_v1/services/instances/transports/grpc.py
@@ -83,16 +83,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/appengine_admin_v1/services/instances/transports/grpc_asyncio.py b/google/cloud/appengine_admin_v1/services/instances/transports/grpc_asyncio.py
index a8f7b05..4825fdc 100644
--- a/google/cloud/appengine_admin_v1/services/instances/transports/grpc_asyncio.py
+++ b/google/cloud/appengine_admin_v1/services/instances/transports/grpc_asyncio.py
@@ -130,16 +130,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/appengine_admin_v1/services/services/client.py b/google/cloud/appengine_admin_v1/services/services/client.py
index 2d630ee..bc61a0a 100644
--- a/google/cloud/appengine_admin_v1/services/services/client.py
+++ b/google/cloud/appengine_admin_v1/services/services/client.py
@@ -17,7 +17,7 @@
 from distutils import util
 import os
 import re
-from typing import Callable, Dict, Optional, Sequence, Tuple, Type, Union
+from typing import Dict, Optional, Sequence, Tuple, Type, Union
 import pkg_resources
 
 from google.api_core import client_options as client_options_lib  # type: ignore
@@ -340,7 +340,7 @@ def __init__(
 
     def list_services(
         self,
-        request: appengine.ListServicesRequest = None,
+        request: Union[appengine.ListServicesRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -349,7 +349,7 @@ def list_services(
         r"""Lists all the services in the application.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.ListServicesRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.ListServicesRequest, dict]):
                 The request object. Request message for
                 `Services.ListServices`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -398,7 +398,7 @@ def list_services(
 
     def get_service(
         self,
-        request: appengine.GetServiceRequest = None,
+        request: Union[appengine.GetServiceRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -408,7 +408,7 @@ def get_service(
         service.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.GetServiceRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.GetServiceRequest, dict]):
                 The request object. Request message for
                 `Services.GetService`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -459,7 +459,7 @@ def get_service(
 
     def update_service(
         self,
-        request: appengine.UpdateServiceRequest = None,
+        request: Union[appengine.UpdateServiceRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -468,7 +468,7 @@ def update_service(
         r"""Updates the configuration of the specified service.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.UpdateServiceRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.UpdateServiceRequest, dict]):
                 The request object. Request message for
                 `Services.UpdateService`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -526,7 +526,7 @@ def update_service(
 
     def delete_service(
         self,
-        request: appengine.DeleteServiceRequest = None,
+        request: Union[appengine.DeleteServiceRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -536,7 +536,7 @@ def delete_service(
         versions.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.DeleteServiceRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.DeleteServiceRequest, dict]):
                 The request object. Request message for
                 `Services.DeleteService`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
diff --git a/google/cloud/appengine_admin_v1/services/services/transports/base.py b/google/cloud/appengine_admin_v1/services/services/transports/base.py
index 4f5d40e..a276406 100644
--- a/google/cloud/appengine_admin_v1/services/services/transports/base.py
+++ b/google/cloud/appengine_admin_v1/services/services/transports/base.py
@@ -124,7 +124,7 @@ def __init__(
                 **scopes_kwargs, quota_project_id=quota_project_id
             )
 
-        # If the credentials is service account credentials, then always try to use self signed JWT.
+        # If the credentials are service account credentials, then always try to use self signed JWT.
         if (
             always_use_jwt_access
             and isinstance(credentials, service_account.Credentials)
diff --git a/google/cloud/appengine_admin_v1/services/services/transports/grpc.py b/google/cloud/appengine_admin_v1/services/services/transports/grpc.py
index 4aed507..6225fc5 100644
--- a/google/cloud/appengine_admin_v1/services/services/transports/grpc.py
+++ b/google/cloud/appengine_admin_v1/services/services/transports/grpc.py
@@ -83,16 +83,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/appengine_admin_v1/services/services/transports/grpc_asyncio.py b/google/cloud/appengine_admin_v1/services/services/transports/grpc_asyncio.py
index 339511c..b479e83 100644
--- a/google/cloud/appengine_admin_v1/services/services/transports/grpc_asyncio.py
+++ b/google/cloud/appengine_admin_v1/services/services/transports/grpc_asyncio.py
@@ -130,16 +130,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/appengine_admin_v1/services/versions/client.py b/google/cloud/appengine_admin_v1/services/versions/client.py
index 4d05135..2d3fe2d 100644
--- a/google/cloud/appengine_admin_v1/services/versions/client.py
+++ b/google/cloud/appengine_admin_v1/services/versions/client.py
@@ -17,7 +17,7 @@
 from distutils import util
 import os
 import re
-from typing import Callable, Dict, Optional, Sequence, Tuple, Type, Union
+from typing import Dict, Optional, Sequence, Tuple, Type, Union
 import pkg_resources
 
 from google.api_core import client_options as client_options_lib  # type: ignore
@@ -343,7 +343,7 @@ def __init__(
 
     def list_versions(
         self,
-        request: appengine.ListVersionsRequest = None,
+        request: Union[appengine.ListVersionsRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -352,7 +352,7 @@ def list_versions(
         r"""Lists the versions of a service.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.ListVersionsRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.ListVersionsRequest, dict]):
                 The request object. Request message for
                 `Versions.ListVersions`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -401,7 +401,7 @@ def list_versions(
 
     def get_version(
         self,
-        request: appengine.GetVersionRequest = None,
+        request: Union[appengine.GetVersionRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -412,7 +412,7 @@ def get_version(
         parameter to get the full resource.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.GetVersionRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.GetVersionRequest, dict]):
                 The request object. Request message for
                 `Versions.GetVersion`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -454,7 +454,7 @@ def get_version(
 
     def create_version(
         self,
-        request: appengine.CreateVersionRequest = None,
+        request: Union[appengine.CreateVersionRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -463,7 +463,7 @@ def create_version(
         r"""Deploys code and resource files to a new version.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.CreateVersionRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.CreateVersionRequest, dict]):
                 The request object. Request message for
                 `Versions.CreateVersion`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -514,7 +514,7 @@ def create_version(
 
     def update_version(
         self,
-        request: appengine.UpdateVersionRequest = None,
+        request: Union[appengine.UpdateVersionRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -558,7 +558,7 @@ def update_version(
         -  ```manual_scaling.instances`` <https://cloud.google.com/appengine/docs/admin-api/reference/rest/v1/apps.services.versions#manualscaling>`__
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.UpdateVersionRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.UpdateVersionRequest, dict]):
                 The request object. Request message for
                 `Versions.UpdateVersion`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
@@ -609,7 +609,7 @@ def update_version(
 
     def delete_version(
         self,
-        request: appengine.DeleteVersionRequest = None,
+        request: Union[appengine.DeleteVersionRequest, dict] = None,
         *,
         retry: retries.Retry = gapic_v1.method.DEFAULT,
         timeout: float = None,
@@ -618,7 +618,7 @@ def delete_version(
         r"""Deletes an existing Version resource.
 
         Args:
-            request (google.cloud.appengine_admin_v1.types.DeleteVersionRequest):
+            request (Union[google.cloud.appengine_admin_v1.types.DeleteVersionRequest, dict]):
                 The request object. Request message for
                 `Versions.DeleteVersion`.
             retry (google.api_core.retry.Retry): Designation of what errors, if any,
diff --git a/google/cloud/appengine_admin_v1/services/versions/transports/base.py b/google/cloud/appengine_admin_v1/services/versions/transports/base.py
index 085cfd3..03f11cd 100644
--- a/google/cloud/appengine_admin_v1/services/versions/transports/base.py
+++ b/google/cloud/appengine_admin_v1/services/versions/transports/base.py
@@ -124,7 +124,7 @@ def __init__(
                 **scopes_kwargs, quota_project_id=quota_project_id
             )
 
-        # If the credentials is service account credentials, then always try to use self signed JWT.
+        # If the credentials are service account credentials, then always try to use self signed JWT.
         if (
             always_use_jwt_access
             and isinstance(credentials, service_account.Credentials)
diff --git a/google/cloud/appengine_admin_v1/services/versions/transports/grpc.py b/google/cloud/appengine_admin_v1/services/versions/transports/grpc.py
index fc8ee54..9abe8a4 100644
--- a/google/cloud/appengine_admin_v1/services/versions/transports/grpc.py
+++ b/google/cloud/appengine_admin_v1/services/versions/transports/grpc.py
@@ -83,16 +83,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/google/cloud/appengine_admin_v1/services/versions/transports/grpc_asyncio.py b/google/cloud/appengine_admin_v1/services/versions/transports/grpc_asyncio.py
index b8fdefb..52a24e5 100644
--- a/google/cloud/appengine_admin_v1/services/versions/transports/grpc_asyncio.py
+++ b/google/cloud/appengine_admin_v1/services/versions/transports/grpc_asyncio.py
@@ -130,16 +130,16 @@ def __init__(
             api_mtls_endpoint (Optional[str]): Deprecated. The mutual TLS endpoint.
                 If provided, it overrides the ``host`` argument and tries to create
                 a mutual TLS channel with client SSL credentials from
-                ``client_cert_source`` or applicatin default SSL credentials.
+                ``client_cert_source`` or application default SSL credentials.
             client_cert_source (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 Deprecated. A callback to provide client SSL certificate bytes and
                 private key bytes, both in PEM format. It is ignored if
                 ``api_mtls_endpoint`` is None.
             ssl_channel_credentials (grpc.ChannelCredentials): SSL credentials
-                for grpc channel. It is ignored if ``channel`` is provided.
+                for the grpc channel. It is ignored if ``channel`` is provided.
             client_cert_source_for_mtls (Optional[Callable[[], Tuple[bytes, bytes]]]):
                 A callback to provide client certificate bytes and private key bytes,
-                both in PEM format. It is used to configure mutual TLS channel. It is
+                both in PEM format. It is used to configure a mutual TLS channel. It is
                 ignored if ``channel`` or ``ssl_channel_credentials`` is provided.
             quota_project_id (Optional[str]): An optional project to use for billing
                 and quota.
diff --git a/scripts/fixup_appengine_admin_v1_keywords.py b/scripts/fixup_appengine_admin_v1_keywords.py
index 977426f..d8d9f5c 100644
--- a/scripts/fixup_appengine_admin_v1_keywords.py
+++ b/scripts/fixup_appengine_admin_v1_keywords.py
@@ -39,40 +39,40 @@ def partition(
 class appengine_adminCallTransformer(cst.CSTTransformer):
     CTRL_PARAMS: Tuple[str] = ('retry', 'timeout', 'metadata')
     METHOD_TO_PARAMS: Dict[str, Tuple[str]] = {
-          'batch_update_ingress_rules': ('name', 'ingress_rules', ),
-          'create_application': ('application', ),
-          'create_authorized_certificate': ('parent', 'certificate', ),
-          'create_domain_mapping': ('parent', 'domain_mapping', 'override_strategy', ),
-          'create_ingress_rule': ('parent', 'rule', ),
-          'create_version': ('parent', 'version', ),
-          'debug_instance': ('name', 'ssh_key', ),
-          'delete_authorized_certificate': ('name', ),
-          'delete_domain_mapping': ('name', ),
-          'delete_ingress_rule': ('name', ),
-          'delete_instance': ('name', ),
-          'delete_service': ('name', ),
-          'delete_version': ('name', ),
-          'get_application': ('name', ),
-          'get_authorized_certificate': ('name', 'view', ),
-          'get_domain_mapping': ('name', ),
-          'get_ingress_rule': ('name', ),
-          'get_instance': ('name', ),
-          'get_service': ('name', ),
-          'get_version': ('name', 'view', ),
-          'list_authorized_certificates': ('parent', 'view', 'page_size', 'page_token', ),
-          'list_authorized_domains': ('parent', 'page_size', 'page_token', ),
-          'list_domain_mappings': ('parent', 'page_size', 'page_token', ),
-          'list_ingress_rules': ('parent', 'page_size', 'page_token', 'matching_address', ),
-          'list_instances': ('parent', 'page_size', 'page_token', ),
-          'list_services': ('parent', 'page_size', 'page_token', ),
-          'list_versions': ('parent', 'view', 'page_size', 'page_token', ),
-          'repair_application': ('name', ),
-          'update_application': ('name', 'application', 'update_mask', ),
-          'update_authorized_certificate': ('name', 'certificate', 'update_mask', ),
-          'update_domain_mapping': ('name', 'domain_mapping', 'update_mask', ),
-          'update_ingress_rule': ('name', 'rule', 'update_mask', ),
-          'update_service': ('name', 'service', 'update_mask', 'migrate_traffic', ),
-          'update_version': ('name', 'version', 'update_mask', ),
+        'batch_update_ingress_rules': ('name', 'ingress_rules', ),
+        'create_application': ('application', ),
+        'create_authorized_certificate': ('parent', 'certificate', ),
+        'create_domain_mapping': ('parent', 'domain_mapping', 'override_strategy', ),
+        'create_ingress_rule': ('parent', 'rule', ),
+        'create_version': ('parent', 'version', ),
+        'debug_instance': ('name', 'ssh_key', ),
+        'delete_authorized_certificate': ('name', ),
+        'delete_domain_mapping': ('name', ),
+        'delete_ingress_rule': ('name', ),
+        'delete_instance': ('name', ),
+        'delete_service': ('name', ),
+        'delete_version': ('name', ),
+        'get_application': ('name', ),
+        'get_authorized_certificate': ('name', 'view', ),
+        'get_domain_mapping': ('name', ),
+        'get_ingress_rule': ('name', ),
+        'get_instance': ('name', ),
+        'get_service': ('name', ),
+        'get_version': ('name', 'view', ),
+        'list_authorized_certificates': ('parent', 'view', 'page_size', 'page_token', ),
+        'list_authorized_domains': ('parent', 'page_size', 'page_token', ),
+        'list_domain_mappings': ('parent', 'page_size', 'page_token', ),
+        'list_ingress_rules': ('parent', 'page_size', 'page_token', 'matching_address', ),
+        'list_instances': ('parent', 'page_size', 'page_token', ),
+        'list_services': ('parent', 'page_size', 'page_token', ),
+        'list_versions': ('parent', 'view', 'page_size', 'page_token', ),
+        'repair_application': ('name', ),
+        'update_application': ('name', 'application', 'update_mask', ),
+        'update_authorized_certificate': ('name', 'certificate', 'update_mask', ),
+        'update_domain_mapping': ('name', 'domain_mapping', 'update_mask', ),
+        'update_ingress_rule': ('name', 'rule', 'update_mask', ),
+        'update_service': ('name', 'service', 'update_mask', 'migrate_traffic', ),
+        'update_version': ('name', 'version', 'update_mask', ),
     }
 
     def leave_Call(self, original: cst.Call, updated: cst.Call) -> cst.CSTNode:
@@ -91,7 +91,7 @@ def leave_Call(self, original: cst.Call, updated: cst.Call) -> cst.CSTNode:
             return updated
 
         kwargs, ctrl_kwargs = partition(
-            lambda a: not a.keyword.value in self.CTRL_PARAMS,
+            lambda a: a.keyword.value not in self.CTRL_PARAMS,
             kwargs
         )
 
diff --git a/tests/unit/gapic/appengine_admin_v1/test_instances.py b/tests/unit/gapic/appengine_admin_v1/test_instances.py
index 2fbe274..d82988f 100644
--- a/tests/unit/gapic/appengine_admin_v1/test_instances.py
+++ b/tests/unit/gapic/appengine_admin_v1/test_instances.py
@@ -780,7 +780,7 @@ def test_get_instance(
             vm_id="vm_id_value",
             requests=892,
             errors=669,
-            qps=0.340,
+            qps=0.34,
             average_latency=1578,
             memory_usage=1293,
             vm_status="vm_status_value",
@@ -806,7 +806,7 @@ def test_get_instance(
     assert response.vm_id == "vm_id_value"
     assert response.requests == 892
     assert response.errors == 669
-    assert math.isclose(response.qps, 0.340, rel_tol=1e-6)
+    assert math.isclose(response.qps, 0.34, rel_tol=1e-6)
     assert response.average_latency == 1578
     assert response.memory_usage == 1293
     assert response.vm_status == "vm_status_value"
@@ -860,7 +860,7 @@ async def test_get_instance_async(
                 vm_id="vm_id_value",
                 requests=892,
                 errors=669,
-                qps=0.340,
+                qps=0.34,
                 average_latency=1578,
                 memory_usage=1293,
                 vm_status="vm_status_value",
@@ -887,7 +887,7 @@ async def test_get_instance_async(
     assert response.vm_id == "vm_id_value"
     assert response.requests == 892
     assert response.errors == 669
-    assert math.isclose(response.qps, 0.340, rel_tol=1e-6)
+    assert math.isclose(response.qps, 0.34, rel_tol=1e-6)
     assert response.average_latency == 1578
     assert response.memory_usage == 1293
     assert response.vm_status == "vm_status_value"