System/Library/PrivateFrameworks/FrontBoard.framework

FBPreferences.h

NSObject
>
BSAbstractDefaultDomain

@interface FBPreferences : BSAbstractDefaultDomain

@property (readonly, nonatomic) BOOL disableXPCServicesEndpointHack;

+ (id)sharedInstance;

- (id)_init;
- (void)_bindAndRegisterDefaults;

@end