RelationshipAddRelationshipKey Method | 
| Name | Description | |
|---|---|---|
| AddRelationshipKey(RelationshipKey) | 
            Adds a new relationship key to the current instance. The operation is allowed only if the relationship category is not
            Native.
            The category is subsequently changed automatically
            UserDefined.
              | |
| AddRelationshipKey(String, String) | 
            Adds a new relationship key to the current instance. The operation is allowed only if the relationship category is not Native.
            The category is subsequently changed automatically UserDefined.
              |