@classmethod
  def get_key_by_job_id(cls, mapreduce_id):
    return db.Key.from_path(cls.kind(), str(mapreduce_id))
L{basechat.ChatUI.contactChangedNick} on an
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/mapreduce/model.py/MapreduceState.get_key_by_job_id--crossover with--dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/words/test/test_basechat.py/ChatUITests.test_contactChangedNickNoKey