'Updates the `EvaluationName` of an `Evaluation`.
You can use the GetEvaluation operation to view the contents
of the updated data element.
:type evaluation_id: string
:param evaluation_id: The ID assigned to the `Evaluation` during
creation.
:type evaluation_name: string
:param evaluation_name: A new user-supplied name or description of the
`Evaluation` that will replace the current content.'

def update_evaluation(self, evaluation_id, evaluation_name):

    params = {'EvaluationId': evaluation_id, 'EvaluationName': evaluation_name}
    return self.make_request(action='UpdateEvaluation', body=json.dumps(params))
