Gc\Datatype\AbstractDatatype::getDocument PHP Метод

    public function getDocument()
    {
        if ($this->getData('document') === null) {
            $this->setData('document', DocumentModel::fromId($this->getDocumentId()));
        }
        return $this->getData('document');
    }

 /**
  * Test
  *
  * @return void
  */
 public function testGetDocument()
 {
     $this->assertFalse($this->object->getDocument());
 }