Adds users to an organization
        users_list is a list of strings

        :param organization_id: str
        :param users_list: list
        :return:

def add_users_to_organization(self, organization_id, users_list):
        """
        Adds users to an organization
        users_list is a list of strings

        :param organization_id: str
        :param users_list: list
        :return:
        """
        log.warning('Adding users...')
        url = 'rest/servicedeskapi/organization/{}/user'.format(organization_id)
        data = {'usernames': users_list}

        return self.post(url, headers=self.experimental_headers, data=data)