diff --git a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/CloudRun.java b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/CloudRun.java
index 808bdd90..638bef99 100644
--- a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/CloudRun.java
+++ b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/CloudRun.java
@@ -304,13 +304,13 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getServiceBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(service_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, service_);
     }
-    if (!getPathBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(path_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, path_);
     }
-    if (!getRegionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(region_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, region_);
     }
     unknownFields.writeTo(output);
@@ -322,13 +322,13 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getServiceBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(service_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, service_);
     }
-    if (!getPathBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(path_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, path_);
     }
-    if (!getRegionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(region_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, region_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/CreateTriggerRequest.java b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/CreateTriggerRequest.java
index a8aeb13c..fa3e8280 100644
--- a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/CreateTriggerRequest.java
+++ b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/CreateTriggerRequest.java
@@ -324,13 +324,13 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getParentBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(parent_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, parent_);
     }
     if (trigger_ != null) {
       output.writeMessage(2, getTrigger());
     }
-    if (!getTriggerIdBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(triggerId_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, triggerId_);
     }
     if (validateOnly_ != false) {
@@ -345,13 +345,13 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getParentBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(parent_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, parent_);
     }
     if (trigger_ != null) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(2, getTrigger());
     }
-    if (!getTriggerIdBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(triggerId_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, triggerId_);
     }
     if (validateOnly_ != false) {
diff --git a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/DeleteTriggerRequest.java b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/DeleteTriggerRequest.java
index ca8e0a36..e63cf9ce 100644
--- a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/DeleteTriggerRequest.java
+++ b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/DeleteTriggerRequest.java
@@ -285,10 +285,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
     }
-    if (!getEtagBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(etag_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, etag_);
     }
     if (allowMissing_ != false) {
@@ -306,10 +306,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
     }
-    if (!getEtagBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(etag_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, etag_);
     }
     if (allowMissing_ != false) {
diff --git a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/EventFilter.java b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/EventFilter.java
index 046d1306..182ce719 100644
--- a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/EventFilter.java
+++ b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/EventFilter.java
@@ -235,10 +235,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getAttributeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(attribute_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, attribute_);
     }
-    if (!getValueBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(value_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, value_);
     }
     unknownFields.writeTo(output);
@@ -250,10 +250,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getAttributeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(attribute_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, attribute_);
     }
-    if (!getValueBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(value_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, value_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/GetTriggerRequest.java b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/GetTriggerRequest.java
index 281c51ea..88343026 100644
--- a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/GetTriggerRequest.java
+++ b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/GetTriggerRequest.java
@@ -178,7 +178,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
     }
     unknownFields.writeTo(output);
@@ -190,7 +190,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ListTriggersRequest.java b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ListTriggersRequest.java
index 3ab3518d..ed5ccf6b 100644
--- a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ListTriggersRequest.java
+++ b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ListTriggersRequest.java
@@ -328,16 +328,16 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getParentBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(parent_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, parent_);
     }
     if (pageSize_ != 0) {
       output.writeInt32(2, pageSize_);
     }
-    if (!getPageTokenBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(pageToken_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, pageToken_);
     }
-    if (!getOrderByBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(orderBy_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 4, orderBy_);
     }
     unknownFields.writeTo(output);
@@ -349,16 +349,16 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getParentBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(parent_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, parent_);
     }
     if (pageSize_ != 0) {
       size += com.google.protobuf.CodedOutputStream.computeInt32Size(2, pageSize_);
     }
-    if (!getPageTokenBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(pageToken_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, pageToken_);
     }
-    if (!getOrderByBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(orderBy_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(4, orderBy_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ListTriggersResponse.java b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ListTriggersResponse.java
index 01017fbd..79483b4a 100644
--- a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ListTriggersResponse.java
+++ b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/ListTriggersResponse.java
@@ -339,7 +339,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     for (int i = 0; i < triggers_.size(); i++) {
       output.writeMessage(1, triggers_.get(i));
     }
-    if (!getNextPageTokenBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(nextPageToken_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, nextPageToken_);
     }
     for (int i = 0; i < unreachable_.size(); i++) {
@@ -357,7 +357,7 @@ public int getSerializedSize() {
     for (int i = 0; i < triggers_.size(); i++) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(1, triggers_.get(i));
     }
-    if (!getNextPageTokenBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(nextPageToken_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, nextPageToken_);
     }
     {
diff --git a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/OperationMetadata.java b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/OperationMetadata.java
index d4957481..abaa10bd 100644
--- a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/OperationMetadata.java
+++ b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/OperationMetadata.java
@@ -505,19 +505,19 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (endTime_ != null) {
       output.writeMessage(2, getEndTime());
     }
-    if (!getTargetBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(target_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, target_);
     }
-    if (!getVerbBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(verb_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 4, verb_);
     }
-    if (!getStatusMessageBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(statusMessage_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 5, statusMessage_);
     }
     if (requestedCancellation_ != false) {
       output.writeBool(6, requestedCancellation_);
     }
-    if (!getApiVersionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(apiVersion_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 7, apiVersion_);
     }
     unknownFields.writeTo(output);
@@ -535,19 +535,19 @@ public int getSerializedSize() {
     if (endTime_ != null) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(2, getEndTime());
     }
-    if (!getTargetBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(target_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, target_);
     }
-    if (!getVerbBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(verb_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(4, verb_);
     }
-    if (!getStatusMessageBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(statusMessage_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, statusMessage_);
     }
     if (requestedCancellation_ != false) {
       size += com.google.protobuf.CodedOutputStream.computeBoolSize(6, requestedCancellation_);
     }
-    if (!getApiVersionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(apiVersion_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(7, apiVersion_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/Pubsub.java b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/Pubsub.java
index 9707b672..582d74fd 100644
--- a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/Pubsub.java
+++ b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/Pubsub.java
@@ -245,10 +245,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getTopicBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(topic_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, topic_);
     }
-    if (!getSubscriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(subscription_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, subscription_);
     }
     unknownFields.writeTo(output);
@@ -260,10 +260,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getTopicBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(topic_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, topic_);
     }
-    if (!getSubscriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(subscription_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, subscription_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/Trigger.java b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/Trigger.java
index 9590a3ea..d28e8c72 100644
--- a/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/Trigger.java
+++ b/proto-google-cloud-eventarc-v1/src/main/java/com/google/cloud/eventarc/v1/Trigger.java
@@ -886,10 +886,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
     }
-    if (!getUidBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(uid_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, uid_);
     }
     if (createTime_ != null) {
@@ -901,7 +901,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     for (int i = 0; i < eventFilters_.size(); i++) {
       output.writeMessage(8, eventFilters_.get(i));
     }
-    if (!getServiceAccountBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serviceAccount_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 9, serviceAccount_);
     }
     if (destination_ != null) {
@@ -912,7 +912,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     }
     com.google.protobuf.GeneratedMessageV3.serializeStringMapTo(
         output, internalGetLabels(), LabelsDefaultEntryHolder.defaultEntry, 12);
-    if (!getEtagBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(etag_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 99, etag_);
     }
     unknownFields.writeTo(output);
@@ -924,10 +924,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
     }
-    if (!getUidBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(uid_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, uid_);
     }
     if (createTime_ != null) {
@@ -939,7 +939,7 @@ public int getSerializedSize() {
     for (int i = 0; i < eventFilters_.size(); i++) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(8, eventFilters_.get(i));
     }
-    if (!getServiceAccountBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serviceAccount_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(9, serviceAccount_);
     }
     if (destination_ != null) {
@@ -958,7 +958,7 @@ public int getSerializedSize() {
               .build();
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(12, labels__);
     }
-    if (!getEtagBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(etag_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(99, etag_);
     }
     size += unknownFields.getSerializedSize();