code: def evaluate_at(self, *args, **parameter_specification):  # pragma: no cover
          
  
          # Set the parameters to the provided values
          for parameter in parameter_specification:
  
              self._get_child(parameter).value = parameter_specification[parameter]
  
          return self(*args)
docs: Evaluate the function at the given x(,y,z) for the provided parameters, explicitly provided as part of the
          parameter_specification keywords.
  
          :param *args:
          :param **parameter_specification:
          :return: