code: public function run(): void
      {
          $request = $request = ServerRequestFactory::fromGlobals();
  
          $response = $this->process($request);
  
          $emitter = $this->getContainer()->has(EmitterInterface::class)
              ? $this->getContainer()->get(EmitterInterface::class)
              : new SapiEmitter();
  
          $emitter->emit($response);
      }
docs: Run the app
  
  Will build a request from PHP globals, process that request and then emit it
  
  @return void
  
  @codeCoverageIgnore