public function testData()
 {
     $item = new PageState();
     $data = [['key' => 'val', 'key2' => 'val2']];
     $item->setData($data);
     $this->assertEquals($data, $item->getData());
 }
 /**
  * {@inheritDoc}
  */
 public function setData($data)
 {
     $this->__initializer__ && $this->__initializer__->__invoke($this, 'setData', array($data));
     return parent::setData($data);
 }