Added missing processWrite() call in MessageBodyWriter::writeTo

Author: namedgraph

src/main/java/com/atomgraph/linkeddatahub/writer/ModelXSLTWriter.java

@@ -110,7 +110,7 @@ public void writeTo(Model model, Class<?> type, Type genericType, Annotation[] a
             RDFWriter.create().
                 format(RDFFormat.RDFXML_PLAIN).
                 context(cxt).
-                source(model).
+                source(processWrite(model)).
                 output(baos);
 
             transform(baos, mediaType, headerMap, entityStream);