ZF2: how to check if a view template exists from within a controller

gistfile1.php

    $template = 'non/existant/template';
    $resolver = $this->getEvent()
        ->getApplication()
        ->getServiceManager()
        ->get('Zend\View\Resolver\TemplatePathStack');

    if (false === $resolver->resolve($template)) {

        // does not exist
    }

// @see http://stackoverflow.com/questions/12224176/how-to-check-if-a-zf2-view-template-exists