void btr_add_output(char *buf, size_t size, struct btr_node *btrn);
bool btr_no_children(struct btr_node *btrn);
size_t btr_bytes_pending(struct btr_node *btrn);
void btr_add_output(char *buf, size_t size, struct btr_node *btrn);
bool btr_no_children(struct btr_node *btrn);
size_t btr_bytes_pending(struct btr_node *btrn);