@Override
          public @Nls String getDocumentation() {
            if (BrowserUtil.isAbsoluteURL(url)) {
              BrowserUtil.browse(url);
              return "";
            }
            else {
              return CodeInsightBundle.message("javadoc.error.resolving.url", url);
            }
          }
@Override
          public @Nls String getDocumentation()