@Override
    protected <T> byte[] toByteArray(T message, Schema<T> schema)
    {
        return JsonXIOUtil.toByteArray(message, schema, isNumeric(), buf());
    }
Test runtime collection fields with {@link CollectionSchema} via jsonx ser/deser.

@author David Yu
@created Jan 27, 2011
protostuff-json/src/test/java/io/protostuff/JsonXRuntimeCollectionSchemaTest.java