/**
  * Makes PUT request, uri can be relative to current context (without endpoint and API path)
  * Content is encoded to JSON or some other supported format
  *
  * @param string $uri
  * @param mixed  $content
  * @param array  $options
  *
  * @return mixed|null
  */
 public function put($uri, $content = null, $options = array())
 {
     return $this->client->put($uri, $content, $options);
 }