Example for using `ciaranmcnulty/behat-psr7extension` with a Zend Expressive app

app.php

<?php
declare(strict_types=1);

use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;

/** @var \Interop\Container\ContainerInterface $container */
$container = require __DIR__ . '/../config/container.php';

/** @var \Zend\Expressive\Application $app */
$app = $container->get('Zend\Expressive\Application');

return function (ServerRequestInterface $request) use ($app) : ResponseInterface
{
    return $app->process($request, $app->getDefaultDelegate());
};