title: Ref from Dropdown.Button (antd)
body: <p>How can I get a ref to a Dropdown.Button (it is antd), when I set a ref to it, it returns a wrapper ?</p>
  
  <pre><code> parent = null;
   parentRef = node =&gt; (this.parent = node);
  
  render(){
   return (
   &lt;Dropdown.Button
     ref={this.parentRef}
     overlay={menu}
     type="primary"
    &gt;
       content
   &lt;/Dropdown.Button&gt;
   )
  }
  </code></pre>