code: def calculate_single_terms(self):
          
          lines = self._call_methods('calculate_single_terms',
                                     self.model.PART_ODE_METHODS)
          if lines:
              lines.insert(1, ('        self.numvars.nmb_calls ='
                               'self.numvars.nmb_calls+1'))
          return lines
docs: Lines of model method with the same name.