XsltTemplate xsltTemplate = XsltTemplates.getCompiledTemplate(xsltReference.getSrc());
info.MetadataType_Key = xmlType.getKey();
info.MetadataType_Identifier = xmlType.getIdentifier();
info.MetadataType_Indexables_Version = xsltReference.getVersion();
long t3 = System.currentTimeMillis();
stats.incrementTime(tn+".interrogateXmlType",t3-t2);
// append fields at the top of the document
this.append(context,doc,info,true,false);
// transform the metadata document to a Solr document