docs: public List<String> getUnsavedResources() {
          List<String> list = new ArrayList<>();
          List<String> l;
  
          for (int i = 0; i < getExtensionCount(); i++) {
              l = getExtension(i).getUnsavedResources();
              if (l != null) {
                  list.addAll(l);
              }
          }
          
          return list;
      }