code: def get(self, digest, chunk_size=1024 * 128):
          
          return self.conn.client.blob_get(self.container_name, digest,
                                           chunk_size)
docs: Return the contents of a blob
  
          :param digest: the hex digest of the blob to return
          :param chunk_size: the size of the chunks returned on each iteration
          :return: generator returning chunks of data