@Override
        public ManagedKeyValueIterator<Bytes, byte[]> all(final DBAccessor accessor, final boolean forward) {
            final RocksIterator innerIterWithTimestamp = accessor.newIterator(columnFamily);
            if (forward) {
                innerIterWithTimestamp.seekToFirst();
            } else {
                innerIterWithTimestamp.seekToLast();
            }
            return new RocksDbIterator(name, innerIterWithTimestamp, forward);
        }
Deletes keys entries in the range ['from', 'to'], including 'from' and excluding 'to'.
streams/src/main/java/org/apache/kafka/streams/state/internals/RocksDBStore.java