public function setSound(string $soundUrl)
    {
        return $this->setAndroidSound($soundUrl)
            ->setIosSound($soundUrl)
            ->setWindowsSound($soundUrl);
    }
public function setSound(string $soundUrl)
    {
        return $this->setAndroidSound($soundUrl)
            ->setIosSound($soundUrl)
            ->setWindowsSound($soundUrl);
    }
public function setSound ( string $ soundUrl ) { return $ this -> setAndroidSound ( $ soundUrl ) -> setIosSound ( $ soundUrl ) -> setWindowsSound ( $ soundUrl ) ; }
Set the Sound for all Systems.

@param string $soundUrl

@return $this
Set the Sound for all Systems .