/**
  * Request a access token.
  *
  * @param string $code The authorization code from Spotify.
  *
  * @return bool
  */
 public function requestToken($code)
 {
     $parameters = array('client_id' => $this->getClientId(), 'client_secret' => $this->getClientSecret(), 'code' => $code, 'grant_type' => 'authorization_code', 'redirect_uri' => $this->getRedirectUri());
     $response = Request::account('POST', '/api/token', $parameters);
     $response = $response['body'];
     if (isset($response->access_token)) {
         $this->accessToken = $response->access_token;
         $this->expires = $response->expires_in;
         $this->refreshToken = $response->refresh_token;
         return true;
     }
     return false;
 }