def get_mean_and_stddevs(self, sctx, rctx, dctx, imt, stddev_types):
        """
        Call the get mean and stddevs of the GMPE for the respective IMT
        """
        return self.kwargs[str(imt)].get_mean_and_stddevs(
            sctx, rctx, dctx, imt, stddev_types)
Call the get mean and stddevs of the GMPE for the respective IMT