def to_json(self):
    """Serializes all data in this mapreduce spec into json form.

    Returns:
      data in json format.
    """
    mapper_spec = self.mapper.to_json()
    return {
        "name": self.name,
        "mapreduce_id": self.mapreduce_id,
        "mapper_spec": mapper_spec,
        "params": self.params,
    }
Serializes all data in this mapreduce spec into json form.

    Returns:
      data in json format.
    
mapreduce/model.py