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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_request_participants(self, issue_id_or_key, start=0, limit=50):
 """ Get request participants :param issue_id_or_key: str :param start: OPTIONAL: int :param limit: OPTIONAL: int :return: Request participants """

        url = 'rest/servicedeskapi/request/{}/participant'.format(issue_id_or_key)
        params = {}
        if start is not None:
            params['start'] = int(start)
        if limit is not None:
            params['limit'] = int(limit)

        return self.get(url, params=params).get('values')