hashmap__append
err = hashmap__append(tab, btf_id, id);
err = hashmap__append(build_fn_table, pinned_info.id, path);
err = hashmap__append(map, e->id, refs);
err = hashmap__append(p->str_off_map, *str_off, off);
return hashmap__append(d->dedup_table, hash, type_id);
err = hashmap__append(map, "c", "cherry");
err = hashmap__append(map, k1, 1);
err = hashmap__append(map, k1, 2);
err = hashmap__append(map, k1, 4);
err = hashmap__append(map, k2, 8);
err = hashmap__append(map, k2, 16);
err = hashmap__append(map, k2, 32);