duncan3dc\Sonos\Controller::getCrossfade PHP Method

    public function getCrossfade()
    {
        return (bool) $this->soap("AVTransport", "GetCrossfadeMode");
    }

 /**
  * Get the current playing mode (repeat/shuffle/etc).
  *
  * @param Controller $controller The Controller to grab the state of
  *
  * @return static
  */
 protected function getMode(Controller $controller)
 {
     $mode = $controller->getMode();
     $this->repeat = $mode["repeat"];
     $this->shuffle = $mode["shuffle"];
     $this->crossfade = $controller->getCrossfade();
     return $this;
 }