public DocBuilder(
     DataImporter dataImporter, SolrWriter writer, DataImporter.RequestParams reqParams) {
   INSTANCE.set(this);
   this.dataImporter = dataImporter;
   this.writer = writer;
   DataImporter.QUERY_COUNT.set(importStatistics.queryCount);
   requestParameters = reqParams;
   verboseDebug = requestParameters.debug && requestParameters.verbose;
   functionsNamespace =
       EvaluatorBag.getFunctionsNamespace(this.dataImporter.getConfig().functions, this);
   persistedProperties = writer.readIndexerProperties();
 }