static DocumentBuilderIndexedEntity<?> getDocumentBuilder(QueryBuildingContext queryContext) {
final SearchFactoryImplementor factory = queryContext.getFactory();
final Class<?> type = queryContext.getEntityType();
EntityIndexBinder indexBinding = factory.getIndexBindingForEntity(type);
if (indexBinding == null) {
throw new AssertionFailure("Class in not indexed: " + type);
}
return indexBinding.getDocumentBuilder();
}
