code: def register_group(self, name, policies=None, mount_point=DEFAULT_MOUNT_POINT):
          
          params = {
              'policies': policies,
          }
          api_path = '/v1/auth/{mount_point}/groups/{name}'.format(
              mount_point=mount_point,
              name=name,
          )
          return self._adapter.post(
              url=api_path,
              json=params,
          )
docs: Register a new group and maps a set of policies to it.
  
          Supported methods:
              POST: /auth/{mount_point}/groups/{name}. Produces: 204 (empty body)
  
          :param name: The name of the group.
          :type name: str | unicode
          :param policies: The list or comma-separated string of policies associated with the group.
          :type policies: list
          :param mount_point: The "path" the method/backend was mounted on.
          :type mount_point: str | unicode
          :return: The response of the request.
          :rtype: requests.Response