addMember method
Adds a member to this bundle.
The optional metadata map is attached to the new bundle revision and
can later be inspected via getMembershipHistory.
Returns the pb.AddBundleMemberResponse (success/message/newRevision),
mirroring the Python SDK's Bundle.add_member.
final response = await bundle.addMember(hero.kref, metadata: {'role': 'hero'});
Implementation
Future<pb.AddBundleMemberResponse> addMember(Kref memberKref,
{Map<String, String>? metadata}) async {
return client.addBundleMember(kref.uri, memberKref.uri, metadata: metadata);
}