(self, num_individuals)
Return the number of individuals that will be
      replaced in the migration process

      :param num_individuals: the number of individuals to be replaced
Return the number of individuals that will be
      replaced in the migration process
Return the number of individuals that will be replaced in the migration process
def setNumReplacement(self, num_individuals):
      """ Return the number of individuals that will be
      replaced in the migration process

      :param num_individuals: the number of individuals to be replaced
      """
      self.nReplacement = num_individuals
def setNumReplacement ( self , num_individuals ) : self . nReplacement = num_individuals