docs: add generated snippets (#680)

* chore: use gapic-generator-python 0.63.2
docs: add generated snippets

PiperOrigin-RevId: 427792504

Source-Link: googleapis/googleapis@55b9e1e

Source-Link: googleapis/googleapis-gen@bf4e86b
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiYmY0ZTg2Yjc1M2Y0MmNiMGVkYjFmZDUxZmJlODQwZDdkYTBhMWNkZSJ9

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* fix!: annotating some fields as REQUIRED

These fields were actually always required by the backend, so annotation just documents status quo. I believe this change will not require major version bump for any language.

PiperOrigin-RevId: 429093810

Source-Link: googleapis/googleapis@dc04c1c

Source-Link: googleapis/googleapis-gen@0e23469
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiMGUyMzQ2OWJlYTJmMzk3ZjJiNzgzYzVhMjVlNjQ0NTJmODZiZTZiYyJ9

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* chore: use gapic-generator-python 0.63.4

chore: fix snippet region tag format
chore: fix docstring code block formatting
PiperOrigin-RevId: 430730865

Source-Link: googleapis/googleapis@ea58002

Source-Link: googleapis/googleapis-gen@ca893ff
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiY2E4OTNmZjhhZjI1ZmM3ZmUwMDFkZTE0MDVhNTE3ZDgwNDQ2ZWNjYSJ9

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* chore: delete duplicates

* chore: update copyright year to 2022

PiperOrigin-RevId: 431037888

Source-Link: googleapis/googleapis@b3397f5

Source-Link: googleapis/googleapis-gen@510b54e
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiNTEwYjU0ZTFjZGVmZDUzMTczOTg0ZGYxNjY0NTA4MTMwOGZlODk3ZSJ9

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Bu Sun Kim <8822365+busunkim96@users.noreply.github.com>

google/cloud/spanner_admin_database_v1/__init__.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

google/cloud/spanner_admin_database_v1/services/__init__.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

google/cloud/spanner_admin_database_v1/services/database_admin/__init__.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2020 Google LLC
+# Copyright 2022 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.