@staticmethod
def _rename_metric_type(metric):
    """
        FIXME DROPME in 1.0:

        API documentation was illegitimately promoting usage of `metric_type` parameter
        instead of `type`.
        To be consistent and avoid 'backward incompatibilities', properly rename this parameter.
        """
    if 'metric_type' in metric:
        metric['type'] = metric.pop('metric_type')
