docs: @Override
      public void setAttribute(String name, Object value) {
          if (name.startsWith(IPortletRenderer.RENDERER_ATTRIBUTE_PREFIX)) {
              throw new IllegalArgumentException(
                      "Portlets cannot set attributes that start with: "
                              + IPortletRenderer.RENDERER_ATTRIBUTE_PREFIX);
          }
  
          this.attributes.put(name, value);
      }