No particular remark is needed except regarding the iterators:
Iterator “each_material” in ruby extension becomes “iter_material”.
Iterator “each_materialId” in ruby extension becomes “iter_materialId”.
Iterator “each_laminate” in ruby extension becomes “iter_laminate”.
Iterator “each_laminateId” in ruby extension becomes “iter_laminateId”.
Iterator “each_load” in ruby extension becomes “iter_load”.
Iterator “each_loadId” in ruby extension becomes “iter_loadId”.