MonoMac 0.0.0.0 System.Object keys for use with instant message services.

A single instance stores information regarding a single instant message service, with the dictionary keys and values holding information about different parts of the instant message service.

`NSDictionary instantMessage = NSDictionary.FromObjectsAndKeys( new NSObject[]{ ABPersonInstantMessageService.Jabber, new NSString ("user@example.org"), }, new NSObject[]{ ABPersonInstantMessageKey.Service, ABPersonInstantMessageKey.Username, } ); ABMutableDictionaryMultiValue instantMessages = new ABMutableDictionaryMultiValue() { { address, ABLabel.Home }, }; ABPerson person = GetMeSomePerson(); person.SetInstantMessages(addresses);`
- Property
  0.0.0.0
  MonoMac.Foundation.NSString Represents the value associated with the constant kABPersonInstantMessageServiceKey A containing the key to use for the Service portion of the instant message information.
- Property
  0.0.0.0
  MonoMac.Foundation.NSString Represents the value associated with the constant kABPersonInstantMessageUsernameKey A containing the key to use for the Username portion of the instant message information.