feat: Session support for mutateRows

[alexoneill]

No description provided.

[gemini-code-assist]

Code Review

This pull request introduces support for mutateRows (bulk mutations) across the Bigtable client's async API and compatibility layers, including TableAsync, AuthorizedViewAsync, and TableBase, along with a new MutateRowsShim implementation. The review feedback suggests importing com.google.common.base.Preconditions and adding a defensive null check for the client parameter in the MutateRowsShim constructor to ensure object integrity.

[gemini-code-assist]

Import com.google.common.base.Preconditions to support defensive null-checking of parameters in the constructor.

Suggested change

	import com.google.cloud.bigtable.data.v2.models.TargetId;
	import io.grpc.Deadline;
	import com.google.cloud.bigtable.data.v2.models.TargetId;
	import com.google.common.base.Preconditions;
	import io.grpc.Deadline;

[gemini-code-assist]

Add a defensive null check for the client parameter in the constructor to ensure the object is initialized with a valid reference.

  public MutateRowsShim(Client client) {
    Preconditions.checkNotNull(client, "client is required");
    tables =

References

1. Defensive null checks in constructors are appropriate to ensure object integrity, provided they are not redundant with upstream validation.

[mutianf]

this comment can be removed. My PR is removing it in all other places.

[mutianf]

Can we remove this method?

on line 192 in tableBase you can do something like:

ImmutableList<Mutation> mutations = request.getEntriesList().stream().flatMap(entry -> entry.getMutationsList().stream()).collect(toImmutableList());
Util.isIdempotent(mutations);

[mutianf]

we should consider share the pool with MutateRow.

See my PR (although is not approved yet 😂 )
https://github.com/googleapis/google-cloud-java/pull/14585/changes#diff-e47339d2678dd2991014d93d7eaa96d999bb53d535c753e67766f0582b2212f4