src/Model/Alert.php
public function withLaunchImage(string $launchImage): Alert
    {
        $cloned = clone $this;

        $cloned->launchImage = $launchImage;

        return $cloned;
    }
public function withLaunchImage(string $launchImage): Alert
    {
        $cloned = clone $this;

        $cloned->launchImage = $launchImage;

        return $cloned;
    }
Add launch image

@param string $launchImage

@return Alert