gc->btrn = btr_new_node(&(struct btr_node_description)
EMBRACE(.name = name, .parent = parent));
gc->task.pre_select = gc_pre_select;
gc->btrn = btr_new_node(&(struct btr_node_description)
EMBRACE(.name = name, .parent = parent));
gc->task.pre_select = gc_pre_select;