FEM: unit test, separat method to create a doc with all FEM objects
FEM: unit test, separat method to create a doc with all FEM objects

Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master