Get data from command in CQRS

command.php

<?php

// example 1
class ProductController
{

    public function createProductAction(Request $request)
    {
        $responder = new CreateProductResponder();

        $this->get('command_bus')->handle(
            new CreateProductCommand('Foo', $responder)
        );

        $responder->id;
    }

}

// example 2
class ProductController
{

    public function createProductAction(Request $request)
    {
        $bus = $this->get('command_bus');

        $bus->handle(new CreateProductCommand('Foo'));

        $bus->responder->id;
    }

}