declare what are the fields that this code will output. @param declarer OutputFieldsDeclarer

{@inheritDoc}

{@inheritDoc}

{@inheritDoc}

Use the {@link #tupleProducer} to determine which fields are about to be emitted. <p>Note that {@link #nextTuple()} always emits to the default strea

Decode key to convert byte array to state key type. @param key byte array encoded key @return Decoded value of key

Decode value to convert byte array to state value type. @param value byte array encoded value @return Decoded value of value