Function sdb::btree::rev_iter

pub fn rev_iter<T, K, V, P>(
    txn: &'a T, 
    db: &Db_<K, V, P>, 
    origin: Option<(&K, Option<&V>)>
) -> Result<RevIter<'a, T, K, V, P>, <T as LoadPage>::Error> where
    K: Storable + ?Sized,
    V: Storable + ?Sized,
    T: LoadPage,
    P: BTreePage<K, V>,