src/Handler/ActionHandler.php
private function response(
        ResponderInterface $responder,
        ServerRequestInterface $request,
        ResponseInterface $response,
        PayloadInterface $payload
    ) {
        return $responder($request, $response, $payload);
    }
private function response(
        ResponderInterface $responder,
        ServerRequestInterface $request,
        ResponseInterface $response,
        PayloadInterface $payload
    ) {
        return $responder($request, $response, $payload);
    }
Execute the responder to marshall the payload into the response.

@param ResponderInterface $responder
@param ServerRequestInterface $request
@param ResponseInterface $response
@param PayloadInterface $payload

@return ResponseInterface