      if (clz.startsWith('code-annotation-')) {                     
            return true;
          }
        }
        return false;
      }
      const onCopySuccess = function(e) {
        // button target
        const button = e.trigger;
        // don't keep focus
        button.blur();
        // flash "checked"
        button.classList.add('code-copy-button-checked');
        var currentTitle = button.getAttribute("title");
        button.setAttribute("title", "Copied!");
        let tooltip;
  