System/Library/PrivateFrameworks/Home.framework

HFInputSourceServiceItem.h

NSObject
>
HFItem
>
HFServiceItem

@interface HFInputSourceServiceItem : HFServiceItem

+ (id)supportedServiceTypes;

- (id)_subclass_updateWithOptions:(id)a0;
- (id)createControlItemsWithOptions:(id)a0;

@end