| AddLookup(MFIdentifier, MFIdentifier) | Adds a lookup item to the specified property in the PropertyValue collection. Adding the property to the object if it doesn't already exist. |
| AddLookup(Object, Object) | Adds a lookup item to the specified property in the PropertyValue collection. Adding the property to the object if it doesn't already exist. |
| AddLookup(MFIdentifier, ObjVer, Boolean) | Adds a lookup to the passed PropertyValue. Creating it if it doesn't already exist. |
| AddLookup(Object, ObjVer, Boolean) | Adds a lookup to the passed PropertyValue. Creating it if it doesn't already exist. |