0.
0..1 Relation
Saves the relation if the target node is existent. Removes it, if value is empty
@return
0.
0..n Relation
Saves the relations if the target nodes are existent
@return
1.
1..1 Relation
Saves the relation if the target node is existent, relationship class is created and no other relation is already created. Doesn't remove the relation!
@return
Single relation handler method (Check for only one, create if not existent)
Single relation handler method (Check for only one, create if not existent)
@return
Loads target node for RelatedToOne or OptionalRelatedToOne relations
Loads target node for RelatedToOne or OptionalRelatedToOne relations
@return