@Override
    protected void transferCollectionId(Input input, Output output,
            int fieldNumber) throws IOException
    {
        output.writeUInt32(fieldNumber, input.readUInt32(), false);
    }
Register a {@link Delegate} and assign an id.
<p>
Delegate ids start at 1.
protostuff-runtime-registry/src/main/java/io/protostuff/runtime/ExplicitIdStrategy.java