class_docstr: Client wrapper to access Google Cloud Datastore.
docstr: Creates datastore key.
docstr_tok: ["Creates","datastore","key","."]
code: def key(self, *args, **kwargs):
      """Creates datastore key."""
      return self._client.key(*args, **kwargs)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import logging
  import math
  import random
  import time
  import traceback
  from google.cloud import datastore
  from google.cloud import storage
  from google.cloud.exceptions import TooManyRequests
label_desc: Use image node_id 2 for calling the CompetitionDatastoreClient obj's underlying member method code with example usage: obj.key() and returns: self