EntityPropertyValueCollection::verify

public function verify()
{
	$result = new Result();

	/** @var EntityPropertyValue $propertyValue */
	foreach ($this->collection as $propertyValue)
	{
		$r = $propertyValue->verify();
		if (!$r->isSuccess())
		{
			$result->addErrors($r->getErrors());
		}
	}

	return $result;
}