docs: private boolean isLayoutOwnerDefault(IPerson person) {
          final String userName = (String) person.getAttribute("username");
  
          final List<FragmentDefinition> definitions = this.fragmentUtils.getFragmentDefinitions();
          if (userName != null && definitions != null) {
              for (final FragmentDefinition fragmentDefinition : definitions) {
                  if (fragmentDefinition.defaultLayoutOwnerID != null
                          && fragmentDefinition.defaultLayoutOwnerID.equals(userName)) {
                      return true;
                  }
              }
          }
          final String globalDefault = PropertiesManager.getProperty(DEFAULT_LAYOUT_OWNER_PROPERTY);
          if (globalDefault != null && globalDefault.equals(userName)) {
              return true;
          }
  
          return false;
      }