pub unsafe extern "C" fn rocksdb_transactiondb_create_snapshot(
txn_db: *mut rocksdb_transactiondb_t,
) -> *const rocksdb_snapshot_t
pub unsafe extern "C" fn rocksdb_transactiondb_create_snapshot(
txn_db: *mut rocksdb_transactiondb_t,
) -> *const rocksdb_snapshot_t