code: @UiHandler("m_newRewriteButton")
      void onClickNewRewrite(ClickEvent e) {
  
          String rewriteRegex = m_newRewriteRegex.getText();
          String rewriteReplacement = m_newRewriteReplacement.getText();
          String mode = m_newRewriteMode.getFormValueAsString();
          m_controller.editNewRewrite(rewriteRegex, rewriteReplacement, CmsAliasMode.valueOf(mode));
      }
docs: The event handler for the button for adding new rewrite aliases.<p>
  
  @param e the click event