function addGap($gap = 4)
    {
        $item = new \ManiaLib\Gui\Elements\Spacer(1, $gap);
        $this->items[] = $item;
    }
function addGap($gap = 4)
    {
        $item = new \ManiaLib\Gui\Elements\Spacer(1, $gap);
        $this->items[] = $item;
    }
function addGap ( $ gap = 4 ) { $ item = new \ ManiaLib \ Gui \ Elements \ Spacer ( 1 , $ gap ) ; $ this -> items [ ] = $ item ; }
Adds a vertical gap before the next item
@param float
Adds a vertical gap before the next item