@interface DNDXPCEventObserver : NSObject + (void)_registerEventHandler:(id /* block */)a0 forStream:(const char *)a1; + (void)setFocusConfigurationStreamEventHandler:(id /* block */)a0; + (void)_unsubscribeFromStream:(const char *)a0 clientIdentifier:(const char *)a1; + (void)subscribeToFocusConfigurationStreamWithIdentifier:(const char *)a0; + (void)_subscribeToStream:(const char *)a0 clientIdentifier:(const char *)a1; + (void)unsubscribeFromFocusConfigurationStreamWithIdentifier:(const char *)a0; @end