Storm\Core\Relational\RelationshipChange::HasDiscardedRelationship PHP Method

    public function HasDiscardedRelationship()
    {
        return $this->DiscardedRelationship !== null;
    }

 public function Persist(Relational\Transaction $Transaction, Relational\ResultRow $ParentData, Relational\RelationshipChange $RelationshipChange)
 {
     if ($RelationshipChange->HasDiscardedRelationship() || $RelationshipChange->HasPersistedRelationship()) {
         $this->ToOneRelation->Persist($Transaction, $ParentData, $RelationshipChange);
     }
 }