public function saveAlpha(Bool $save = true) : GD
    {
        imagesavealpha($this->canvas, $save);

        return $this;
    }
public function saveAlpha(Bool $save = true) : GD
    {
        imagesavealpha($this->canvas, $save);

        return $this;
    }
public function saveAlpha ( Bool $ save = true ) : GD { imagesavealpha ( $ this -> canvas , $ save ) ; return $ this ; }
Sets save alpha

@param bool $save = true

@return GD
Sets save alpha