public function testCollectionRestore()
 {
     $objCollection = [$this->instance(Post::class), $this->instance(Post::class), $this->instance(Post::class)];
     $collProjection = Post1Representer::collection($objCollection)->toArray();
     $restoredCollection = Post1Representer::restoreCollection(Post::class)->fromArray($collProjection);
     $this->assertEquals(count($objCollection), count($restoredCollection));
     foreach ($restoredCollection as $key => $object) {
         $this->assertEquals($objCollection[$key]->title, $object->title);
         $this->assertEquals($objCollection[$key]->status, $object->status);
         $this->assertEquals($objCollection[$key]->pubDate->format('Y-m-d'), $object->pubDate->format('Y-m-d'));
     }
 }