FlowRateCalculator(dealii::MatrixFree< dim, Number > const &matrix_free_in, unsigned int const dof_index_in, unsigned int const quad_index_in, FlowRateCalculatorData< dim > const &data_in, MPI_Comm const &mpi_comm_in) (defined in ExaDG::IncNS::FlowRateCalculator< dim, Number >)