/**
* Prepare the layout, if any.
*
* If the params contains a non-empty 'layout' variable, that value
* will be used to seed a layout
*
* If a layout is discovered in this way, it will override the one set in
* the constructor, if any.
*
* @param array $params
* @return null
*/
private function prepareLayout($params)
{
if (isset($params['layout'])) {
$this->layout = $params['layout'];
}
$this->renderer->setLayout($this->layout);
}
