chore: librarian release pull request: 20251217T215546Z

[cloud-sdk-librarian-robot]

PR created by the Librarian CLI to initialize a release. Merging this PR will auto trigger a release.

Librarian Version: v0.0.0-20251113212345-55e52e492404
Language Image: us-central1-docker.pkg.dev/cloud-sdk-librarian-prod/images-prod/python-librarian-generator@sha256:b8058df4c45e9a6e07f6b4d65b458d0d059241dd34c814f151c8bf6b89211209

google-cloud-discoveryengine: 0.16.0

0.16.0 (2025-12-17)

Features

• check Python and dependency versions in generated GAPICs (PiperOrigin-RevId: 845448683) (d2b35b25)

• auto-enable mTLS when supported certificates are detected (PiperOrigin-RevId: 845448683) (d2b35b25)

[gemini-code-assist]

Summary of Changes

Hello @cloud-sdk-librarian-robot, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request is an automated release initiated by the Librarian CLI, updating the google-cloud-discoveryengine library to version 0.16.0. The update introduces key features such as automatic mTLS enablement for enhanced security and improved version validation for generated GAPICs. Merging this PR will trigger the official release process for the updated library.

Highlights

• Library Version Update: The google-cloud-discoveryengine library has been updated to version 0.16.0.
• mTLS Auto-Enablement: The library now includes a feature to automatically enable mTLS (mutual Transport Layer Security) when supported certificates are detected.
• GAPIC Version Checks: New checks have been implemented to verify Python and dependency versions within generated GAPICs (Google API Client Libraries).

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[gemini-code-assist]

Code Review

This pull request updates the google-cloud-discoveryengine library from version 0.15.0 to 0.16.0. The changes include updating version numbers in .librarian/state.yaml, the main CHANGELOG.md, and several gapic_version.py files, as well as snippet metadata JSON files. The CHANGELOG.md for google-cloud-discoveryengine details new features in version 0.16.0, specifically the auto-enabling of mTLS when supported certificates are detected and the addition of checks for Python and dependency versions in generated GAPICs.