Returns a mutable set proxy that provides read-write access to the unordered to-many relationship specified by a given key.
Original signature is '- (NSMutableSet *)mutableSetValueForKey:(NSString *)key'
Available in Mac OS X v10.4 and later.

C# | Visual Basic | Visual C++ |
NSMutableSet MutableSetValueForKey( NSString key )
Function MutableSetValueForKey ( _ key As NSString _ ) As NSMutableSet
NSMutableSet^ MutableSetValueForKey( NSString^ key )

- key (NSString)
- The name of an unordered to-many relationship.

A mutable set that provides read-write access to the unordered to-many relationship specified by key.

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)