def _all_load_skeleton(self, traj_node, hdf5_group):
        """Reloads skeleton data of a tree node"""
        if traj_node.v_annotations.f_is_empty():
            self._ann_load_annotations(traj_node, hdf5_group)
        if traj_node.v_comment == '':
            comment = self._all_get_from_attrs(hdf5_group, HDF5StorageService.COMMENT)
            if comment is None:
                comment = ''
            traj_node.v_comment = comment
Reloads skeleton data of a tree node