@Override
    public void writeByteArray(int fieldNumber, byte[] bytes, boolean repeated) throws IOException
    {
        tail = writeTagAndByteArray(
                makeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED),
                bytes, 0, bytes.length,
                this,
                tail);
    }
Resets this output for re-use.
protostuff-core/src/main/java/io/protostuff/ProtobufOutput.java