private void addMapping(CharSequence resourceName, final Collection<? extends Element> elements) {
      if (resourceName != null && resourceName.length() > 0 && !elements.isEmpty()) {
        myFileManager.addAnnotationProcessingClassMapping(resourceName.toString(), Iterators.filter(Iterators.map(elements, convertToClassName), Iterators.notNullFilter()));
      }
    }
private void addMapping(CharSequence resourceName, final Collection<? extends Element> elements)