code: function disableAccessToken()
      {
          $response = $this->doPost($this->apiHost, "1/disable_access_token");
          if ($response->statusCode !== 200) throw RequestUtil::unexpectedStatus($response);
      }
docs: Make an API call to disable the access token that you constructed this `Client`
  with.  After calling this, API calls made with this `Client` will fail.
  
  See <a href="https://www.dropbox.com/developers/core/docs#disable-token">/disable_access_token</a>.
  
  @throws Exception