parameters: (self, node_def, op, message)
docstring: Creates an `AlreadyExistsError`.
docstring_summary: Creates an `AlreadyExistsError`.
docstring_tokens: Creates an AlreadyExistsError .
function: def __init__(self, node_def, op, message):
      """Creates an `AlreadyExistsError`."""
      super(AlreadyExistsError, self).__init__(node_def, op, message,
                                               ALREADY_EXISTS)
function_tokens: def __init__ ( self , node_def , op , message ) : super ( AlreadyExistsError , self ) . __init__ ( node_def , op , message , ALREADY_EXISTS )