private String resolveTypeDiscriminatorForBackReference(Member m) {
   Method me =
       ReflectionUtils.findMethod(
           m.getDeclaringClass(), "get" + firstCharToUpperCase(m.getName()));
   if (me != null) {
     return resolveTypeDiscriminator(resolveReturnType(me));
   }
   return "";
 }
  private void generateSetBasedDocRefView(
      Map<String, org.ektorp.support.DesignDocument.View> views,
      Member me,
      DocumentReferences referenceMetaData) {
    String fieldName = firstCharToLowerCase(me.getName());
    String orderBy = referenceMetaData.orderBy();
    String backRef = referenceMetaData.backReference();
    if (backRef.length() == 0) {
      throw new ViewGenerationException(
          String.format(
              "The DocumentReferences annotation in %s must specify a backReference",
              me.getDeclaringClass()));
    }
    String viewName = NameConventions.backReferenceViewName(fieldName);
    String typeDiscriminator = resolveTypeDiscriminatorForBackReference(me);
    if (orderBy.length() > 0) {

      views.put(
          viewName,
          generateDocRefsAsSetWithOrderByView(backRef, fieldName, orderBy, typeDiscriminator));
    } else {
      views.put(viewName, generateDocRefsAsSetView(backRef, fieldName, typeDiscriminator));
    }
  }