fix: Add context manager return types (#19)

* docs: Add documentation for enums fix: Add context manager return types chore: Update gapic-generator-python to v1.8.1 PiperOrigin-RevId: 503210727 Source-Link: googleapis/googleapis@a391fd1 Source-Link: https://github.com/googleapis/googleapis-gen/commit/0080f830dec37c3384157082bce279e37079ea58 Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiMDA4MGY4MzBkZWMzN2MzMzg0MTU3MDgyYmNlMjc5ZTM3MDc5ZWE1OCJ9 * 🦉 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>

Author: gcf-owl-bot[bot]

google/cloud/security/publicca_v1beta1/services/public_certificate_authority_service/client.py

@@ -582,7 +582,7 @@ def sample_create_external_account_key():
  # Done; return the response.
  return response
 
- def __enter__(self):
+ def __enter__(self) -> "PublicCertificateAuthorityServiceClient":
  return self
 
  def __exit__(self, type, value, traceback):

samples/generated_samples/snippet_metadata_google.cloud.security.publicca.v1beta1.json

@@ -8,7 +8,7 @@
  ],
  "language": "PYTHON",
  "name": "google-cloud-public-ca",
- "version": "0.3.0"
+ "version": "0.1.0"
  },
  "snippets": [
  {