title: getInputProps in Downshift
body: <p>When I render the input element when using Downshift, is it wrong to do</p>
  
  <pre><code>&lt;input {...getInputProps({...this.props})} /&gt;
  </code></pre>
  
  <p>or should I be more specific in which attributes are passed in the object to getInputProps?</p>
  
  <pre><code>{...getInputProps({placeholder: this.props.placeholder})}
  </code></pre>
  
  <p>The later would not then let me add other attributes (e.g. <code>data-testid:controlName</code>) without changing my source control to specifically look for it</p>