docs: @SuppressWarnings("unchecked")
      private Set<String> getResourcePaths() {
  
          Set<String> resources = new HashSet<String>();
          for (Component c : m_resources) {
              if (c instanceof CmsRemovableFormRow<?>) {
                  String value = ((CmsRemovableFormRow<CmsPathSelectField>)c).getInput().getValue();
                  if (CmsStringUtil.isNotEmptyOrWhitespaceOnly(value)) {
                      resources.add(value);
                  }
              }
          }
          return resources;
      }