map_get
val = ba2long(map_get(map, hash), NULL);
val = ba2long(map_get(map, hash), NULL);
val = ba2long(map_get(map, hash), NULL);
val = ba2long(map_get(map, hash), NULL);
bv->bv_value = map_get(map, ba2hash(ba->ba_key, dtev));
val = ba2long(map_get((struct map *)bv->bv_value,
str = ba2str(map_get((struct map *)bv->bv_value,
struct bt_arg *map_get(struct map *, const char *);
ba = map_get(&hist->hmap, bucket);