resource Id
Parameters
value
The ID of the resource to which this policy belongs. Will be of the form projects//buckets/bucket for buckets, and projects//buckets/bucket/objects/object for objects. A specific generation may be specified by appending #generationNumber to the end of the object name, e.g. projects/_/buckets/my-bucket/objects/data.txt#17. The current generation can be denoted with #0. This field is ignored on input.