/**
* @see Hashable::getHash
*
* @since 0.1
*
* @return string
*/
public function getHash()
{
// For considering the reference snaks' property order without actually manipulating the
// reference snaks's order, a new SnakList is generated. The new SnakList is ordered
// by property and its hash is returned.
$orderedSnaks = new SnakList($this->snaks);
$orderedSnaks->orderByProperty();
return $orderedSnaks->getHash();
}
