libraries/ManiaLib/Gui/Layouts/AbstractLayout.php
function setBorder($borderWidth = 0, $borderHeight = 0)
    {
        $this->borderWidth = $borderWidth;
        $this->xIndex = $borderWidth;
        $this->borderHeight = $borderHeight;
        $this->yIndex = -$borderHeight;
    }
function setBorder($borderWidth = 0, $borderHeight = 0)
    {
        $this->borderWidth = $borderWidth;
        $this->xIndex = $borderWidth;
        $this->borderHeight = $borderHeight;
        $this->yIndex = -$borderHeight;
    }
Sets the gap between the layout outer border and its content
@param Border width
@param Border height