public function testSameValueAs()
 {
     $anUuid = Uuid::uuid4();
     $anActionId = new ActionId($anUuid);
     $sameActionId = new ActionId($anUuid);
     $otherActionId = new ActionId(Uuid::uuid4());
     $this->assertTrue($anActionId->sameValueAs($sameActionId));
     $this->assertFalse($anActionId->sameValueAs($otherActionId));
 }