docs: def get_parameters_off_value(self):
          """
              Return the string associated to the parameters_off
  
              :rtype: string
          """
          if self.parameters_off_value == None:
              params = self.CM.get_type_list(self.parameters_off)
              self.parameters_off_value = '({})'.format(' '.join(params))
          return self.parameters_off_value