@Override
    public void writeEnum(int fieldNumber, int value, boolean repeated) throws IOException
    {
        output.writeEnum(fieldNumber, value, repeated);
    }
A FilterOutput contains some other {@link Output output}, which it uses as its basic sink of data.

@author David Yu
@created Nov 11, 2009
protostuff-api/src/main/java/io/protostuff/FilterOutput.java