code: private void emitClose(Expression tagName) {
      IncrementalDomCodeBuilder jsCodeBuilder = getJsCodeBuilder();
      jsCodeBuilder.append(INCREMENTAL_DOM_ELEMENT_CLOSE.call(tagName));
    }
docs: Emits a close tag. For example:
  
  <pre>
  &lt;incrementalDom.elementClose('div');&gt;
  </pre>