Set the display for this view and initialize the display handler.
public function initDisplay() {
if (isset($this->current_display)) {
return TRUE;
}
// Initialize the display cache array.
$this->displayHandlers = new DisplayBag($this, Views::pluginManager('display'));
$this->current_display = 'default';
$this->display_handler = $this->displayHandlers
->get('default');
return TRUE;
}