ElementGroupNamespace ElementGroupNamespace ElementGroupNamespace(manager: GroupManager) Attributes _manager instance-attribute _manager = manager Methods: add add(group: ElementGroup) -> ElementGroup get get(name: str) -> Optional[ElementGroup] get_all get_all() -> Dict[str, ElementGroup] from_cells from_cells(name: str, cell_indices) -> ElementGroup from_meshparts from_meshparts(name: str, meshparts, *, line_cells_only: bool = False) -> ElementGroup