@Override
    public void writeSFixed32(int fieldNumber, int value, boolean repeated) throws IOException
    {
        int tag = WireFormat.makeTag(fieldNumber, WireFormat.WIRETYPE_FIXED32);
        byte[] bytes = CodedOutput.getTagAndRawLittleEndian32Bytes(tag, value);
        size += bytes.length;
        current = new ByteArrayNode(bytes, current);
    }
Returns the data written to this output as a single byte array.
protostuff-core/src/test/java/io/protostuff/DeferredOutput.java