Revert "docs: convert UPGRADING guide to RST to fix table formatting (#…

…268)"

This reverts commit 571171e.

.github/.OwlBot.lock.yaml

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 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:74124fe59b8859f30143dcdea7b78300046d97de816dc53c0e381308a5f4f8bc
+  digest: sha256:0e18b9475fbeb12d9ad4302283171edebb6baf2dfca1bd215ee3b34ed79d95d7

CHANGELOG.md

@@ -196,7 +196,7 @@
 
 ### ⚠ BREAKING CHANGES
 
-* This release has breaking changes. See the [2.0.0 Migration Guide](https://github.com/googleapis/python-datacatalog/blob/main/UPGRADING.rst) for details.
+* This release has breaking changes. See the [2.0.0 Migration Guide](https://github.com/googleapis/python-datacatalog/blob/main/UPGRADING.md) for details.
 
 ### Features
 

UPGRADING.md

@@ -0,0 +1,176 @@
+# 3.0.0 Migration Guide
+
+This document describes the breaking changes that have been made, and what you need to do to update your usage.
+
+The most significant change was introduced at v2.0 release based on a [next-gen code generator](https://github.com/googleapis/gapic-generator-python), and includes substantial interface changes. Existing code written for eariler versions of this library will likely require updates to use this version.
+
+If you experience issues or have questions, please file an [issue](https://github.com/googleapis/python-datacatalog/issues).
+
+## Supported Python Versions
+
+| Applicable previous versions |
+|------------------------------|
+| v1.0.0 or lower              |
+
+> **WARNING**: Breaking change
+> 
+> The 2.0.0 release requires Python 3.6+.
+
+
+## Method Calls
+
+| Applicable previous versions |
+|------------------------------|
+| v1.0.0 or lower              |
+
+> **WARNING**: Breaking change
+>
+> Methods expect request objects. We provide a script that will convert most common use cases.
+
+* Install the library
+
+```py
+python3 -m pip install google-cloud-datacatalog
+```
+
+* The script `fixup_datacatalog_v1_keywords.py` is shipped with the library. It expects
+an input directory (with the code to convert) and an empty destination directory.
+
+```sh
+$ fixup_datacatalog_v1_keywords.py --input-directory .samples/ --output-directory samples/
+```
+
+**Before:**
+```py
+from google.cloud import datacatalog_v1
+datacatalog = datacatalog_v1.DataCatalogClient()
+return datacatalog.lookup_entry(linked_resource=resource_name)
+```
+
+
+**After:**
+```py
+from google.cloud import datacatalog_v1
+datacatalog = datacatalog_v1.DataCatalogClient()
+return datacatalog.lookup_entry(request={'linked_resource': resource_name})
+```
+
+### More Details
+
+In `google-cloud-datacatalog<=1.0.0`, parameters required by the API were positional parameters and optional parameters were keyword parameters.
+
+**Before:**
+```py
+    def create_entry_group(
+        self,
+        parent,
+        entry_group_id,
+        entry_group=None,
+        retry=google.api_core.gapic_v1.method.DEFAULT,
+        timeout=google.api_core.gapic_v1.method.DEFAULT,
+        metadata=None,
+    ):
+```
+
+Since the 2.0.0 release, all methods have a single positional parameter `request`. Method docstrings indicate whether a parameter is required or optional.
+
+Some methods have additional keyword only parameters. The available parameters depend on the `google.api.method_signature` annotation specified by the API producer.
+
+
+**After:**
+```py
+    def create_entry_group(
+        self,
+        request: datacatalog.CreateEntryGroupRequest = None,
+        *,
+        parent: str = None,
+        entry_group_id: str = None,
+        entry_group: datacatalog.EntryGroup = None,
+        retry: retries.Retry = gapic_v1.method.DEFAULT,
+        timeout: float = None,
+        metadata: Sequence[Tuple[str, str]] = (),
+    ) -> datacatalog.EntryGroup:
+```
+
+> **NOTE:** The `request` parameter and flattened keyword parameters for the API are mutually exclusive.
+> Passing both will result in an error.
+
+Both of these calls are valid:
+
+```py
+response = client.create_entry_group(
+    request={
+        "parent": parent,
+        "entry_group_id": entry_group_id,
+        "entry_group": entry_group
+    }
+)
+```
+
+```py
+response = client.create_entry_group(
+    parent=parent, 
+    entry_group_id=entry_group_id,
+    entry_group=entry_group
+)  # Make an API request.
+```
+
+This call is invalid because it mixes `request` with a keyword argument `entry_group`. Executing this code
+will result in an error.
+
+```py
+response = client.create_entry_group(
+    request={
+        "parent": parent,
+        "entry_group_id"=entry_group_id
+    },
+    entry_group=entry_group
+)
+```
+
+
+
+## Enums and Types
+
+| Applicable previous versions |
+|:-----------------------------|
+| v2.0.0 or lower              |
+
+> **WARNING**: Breaking changes
+> 
+> The submodules `enums` and `types` have been removed; the `type` attributes were renamed to `type_` to avoid name collisions.
+
+**Before:**
+```py
+from google.cloud import datacatalog_v1
+entry = datacatalog_v1.types.Entry()
+entry.type = datacatalog_v1.enums.EntryType.FILESET
+```
+
+
+**After:**
+```py
+from google.cloud import datacatalog_v1
+entry = datacatalog_v1.Entry()
+entry.type_ = datacatalog_v1.EntryType.FILESET
+```
+
+The renamed attributes are:
+
+* `TagTemplateField.type` -> `TagTemplatedField.type_`
+* `ColumnSchema.type` -> `ColumnSchema.type_`
+* `Entry.type` -> `Entry.type_`
+
+## Common Resource Path Helper Methods
+
+| Applicable previous versions |
+|:-----------------------------|
+| v1.0.0 or lower              |
+
+The `location_path` method existing in `google-cloud-datacatalog<=1.0.0` was renamed to `common_location_path` in v3.0.0.
+
+If you are upgrading from v1.0.0 or lower, modify your code to use new method name.
+
+If you are upgrading from v2.0.0, and constructing paths manually as described in [previous upgrade guide](https://github.com/googleapis/python-datacatalog/blob/v2.0.0/UPGRADING.md#project-path-helper-methods), now you can use `common_location_path` method.
+
+There are also more resource path helper methods were added: `common_billing_account_path`, `common_folder_path`, `common_organization_path`, and `common_project_path`.

docs/UPGRADING.md

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+../UPGRADING.md