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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 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)