refactor(storage): generalize move object feature to all types of buckets

[mahendra-google]

This PR contains code changes to make move object feature generalized for all types of buckets earlier it was limited to hns bucket only

[gemini-code-assist]

Summary of Changes

Hello @mahendra-google, 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 refactors the moveObject feature within the Google Cloud Storage V1 client library. The primary goal is to broaden the applicability of this feature, allowing it to function across all bucket types rather than being restricted to buckets with hierarchical namespaces. This change enhances the flexibility and utility of object movement operations for users.

Highlights

• Generalize moveObject feature: The moveObject functionality is no longer limited to Hierarchical Namespace (HNS) buckets and can now be used with all types of buckets, broadening its applicability.
• Updated integration tests: The MoveObjectTest has been refactored to use a general InitiallyEmptyBucket instead of an HNS-specific bucket, validating the generalized functionality across different bucket types.
• Documentation clarification: XML documentation for MoveObject methods has been updated to remove specific references to HNS-enabled buckets, reflecting the feature's broader applicability.

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[gemini-code-assist]

Code Review

This pull request generalizes the MoveObject feature to support all bucket types, not just those with Hierarchical Namespace enabled. The changes correctly update the public API documentation and modify the integration tests to use a standard bucket. However, the tests no longer cover the HNS bucket scenario. My main feedback is to enhance the tests to cover both HNS and non-HNS buckets to ensure the generalization is robust and doesn't introduce regressions. This would increase confidence in the change.