public function testToArray()
 {
     $collection = new ImageUriCollection();
     $collection->add(new ImageUri('http://host.com/img.jpg'));
     $expected = ['http://host.com/img.jpg'];
     $this->assertEquals($expected, $collection->toArray());
 }
 /**
  * {@inheritDoc}
  */
 public function toArray()
 {
     return ['SellerSku' => $this->getSellerSku(), 'Images' => parent::toArray()];
 }