code: def to_evenly_discretized_mfd(self):
          
          return EvenlyDiscretizedMFD(self.mmin + self.bin_width / 2.,
                                      self.bin_width,
                                      self.occurrence_rate.tolist())
docs: Returns the activity rate as an instance of the :class:
          openquake.hazardlib.mfd.evenly_discretized.EvenlyDiscretizedMFD