 Power off should only be used when shutdown does not work.</h4>
        <p/>
        <ul/>
        <h2 id="signature">Signature</h2>
        <div class="styled synopsis">
          <code>public function powerOff()
            </code>
        </div>
        <h2 id="return">Returns</h2>
        <dl class="styled">
          <dt>APIResponse</dt>
          <dd><br/>
        </dd>
        </dl>
        <h2 id="throws">Errors/Exceptions</h2>
        <dl class="styled">
          <dt>
            <code>
         