public function testThatWithIdDoesNotChangeRequest()
{
$Request = new Request('foo');
$this->assertSame('foo', $Request->getMethod());
$this->assertSame([], $Request->getParams());
$this->assertNull($Request->getId());
$OtherRequest = $Request->withId(123);
$this->assertSame('foo', $Request->getMethod());
$this->assertSame([], $Request->getParams());
$this->assertNull($Request->getId());
$this->assertSame('foo', $OtherRequest->getMethod());
$this->assertSame([], $OtherRequest->getParams());
$this->assertSame(123, $OtherRequest->getId());
}
