pub fn from_rocksdb(value: RocksDB<StateKeeperColumnFamily>) -> Self {
        RocksdbStorageBuilder(RocksdbStorage {
            db: value,
            pending_patch: PendingPatch::default(),
            #[cfg(test)]
            listener: RocksdbStorageEventListener::default(),
        })
    }
Create a builder from an existing RocksDB instance.
core/lib/state/src/rocksdb/mod.rs