docs: def run_continuous(self, scale):
          """Return a continuous solution to the RGE as `RGsolution` instance."""
          if scale == self.scale_in:
              raise ValueError("The scale must be different from the input scale")
          elif scale < self.scale_in:
              scale_min = scale
              scale_max = self.scale_in
          elif scale > self.scale_in:
              scale_max = scale
              scale_min = self.scale_in
          fun = rge.smeft_evolve_continuous(C_in=self.C_in,
                                            scale_in=self.scale_in,
                                            scale_out=scale)
          return wilson.classes.RGsolution(fun, scale_min, scale_max)