Return a value appropriate for placing in CreateObjectRequest.CRC32C for the given object contents.

Create empty objects with default attributes for all of the supplied names.

Create an object with the supplied contents in the given bucket with the given name.

Create multiple objects with some parallelism, with contents according to the supplied map from name to contents.

Delete all objects from the supplied bucket.

GetDefaultStorageClientConfig is only for test, making the default endpoint non-nil, so that we can create dummy tokenSource while unit test.

Repeatedly call bucket.ListObjects until there is nothing further to list, returning all objects and collapsed runs encountered.

List objects in the supplied bucket whose name starts with the given prefix.

Return a value appropriate for placing in CreateObjectRequest.MD5 for the given object contents.

Read the contents of the latest generation of the object with the supplied name.

SetAttrsInWriter - for setting object-attributes filed in storage.Writer object.