struct btr_node;
struct btr_node *btr_new_node(char *name, struct btr_node *parent);
+void btr_del_node(struct btr_node *btrn);
void btr_add_output(char *buf, size_t size, struct btr_node *btrn);
bool btr_is_leaf_node(struct btr_node *btrn);
+size_t btr_bytes_pending(struct btr_node *btrn);