Method has_jacobian_operator

interfaces/Python/cpp_classes/PythonModel.cpp:32–34

   }

   bool PythonModel::has_jacobian_operator() const {
      return this->user_model.jacobian_operator.has_value();
   }

   bool PythonModel::has_jacobian_transposed_operator() const {
      return this->user_model.jacobian_transposed_operator.has_value();