$serviceLocator
$serviceLocator : \Pivot\Core\Middleware\Pivot\Core\Services\ServliceLocator
Service locator
Service aware Calculate Database class
__invoke(\Psr\Http\Message\ServerRequestInterface $request, \Psr\Http\Message\ResponseInterface $response, callable $next) : \Psr\Http\Message\ResponseInterface
setup the app from data that is already in session.
| \Psr\Http\Message\ServerRequestInterface | $request | PSR7 request |
| \Psr\Http\Message\ResponseInterface | $response | PSR7 response |
| callable | $next | Next middleware |