docs: def GetClientsForHash(cls, hash_obj, token=None, age=aff4.NEWEST_TIME):
      """Yields client_files for the specified file store hash.
  
      Args:
        hash_obj: RDFURN that we want to get hits for.
        token: Security token.
        age: AFF4 age specification. Only get hits corresponding to the given age
          spec. Should be aff4.NEWEST_TIME or a time range given as a tuple
          (start, end) in microseconds since Jan 1st, 1970. If just a microseconds
          value is given it's treated as the higher end of the range, i.e. (0,
          age). See aff4.FACTORY.ParseAgeSpecification for details.
  
      Yields:
        RDFURNs corresponding to a client file that has the hash.
  
      Raises:
        ValueError: if age was set to aff4.ALL_TIMES.
      """
  
      if age == aff4.ALL_TIMES:
        raise ValueError("age==aff4.ALL_TIMES is not supported.")
  
      results = cls.GetClientsForHashes([hash_obj], token=token, age=age)
      for _, client_files in results:
        for client_file in client_files:
          yield client_file