def METHOD_NAME(self, regression):
    """Post a regression object
    It is still unclear whether regressions should have their own separate
    endpoint or just be added to the nodes collection with a different
    'kind' field.  For now, treat this as a middleware feature on top of
    the established API endpoints.
    """
    # pylint: disable=protected-access
    return self.api._post('regression', regression)