@Override
    public <T> void handleUnknownField(int fieldNumber, Schema<T> schema) throws IOException
    {
        if (!messageReference)
            input.skipField(input.getLastTag());
    }
A ByteArrayInput w/c can handle cyclic dependencies when deserializing objects with graph transformations.

@author David Yu
@created Dec 10, 2010
protostuff-core/src/main/java/io/protostuff/GraphByteArrayInput.java