ct->btrn = btr_new_node(&(struct btr_node_description)
EMBRACE(.name = "client", .parent = parent, .child = child));
ct->task.pre_select = client_pre_select;
ct->btrn = btr_new_node(&(struct btr_node_description)
EMBRACE(.name = "client", .parent = parent, .child = child));
ct->task.pre_select = client_pre_select;