/** @test */
 public function an_activity_can_be_planned()
 {
     $id = ActivityId::generate();
     $this->scenario->when(function () use($id) {
         return Activity::plan($id, 'Crash & Compile', 'Programming competition', Schedule::withStartTime(new DateTimeImmutable('2015-10-01 14:30')), Location::fromNameAndAddress('Francken kamer'), Activity::SOCIAL);
     })->then([$this->socialActivityWasPlanned($id)]);
 }
 public static function plan(ActivityId $id, $name, $description, Schedule $schedule, Location $location, $type)
 {
     $activity = new Activity();
     $activity->apply(new ActivityPlanned($id, $name, $description, $schedule, $location, $type));
     return $activity;
 }