@interface HMDMRSetEndpointVolumeOperationDefaultExternalObjectInterface : HMFObject <HMDMRSetEndpointVolumeOperationExternalObjectInterface> - (id)copyMRAVEndpointOutputDevices:(id)a0; - (id)createAssistantConnection; - (id)createAssistantDiscovery; - (id)getMRAVEndpointOutputDeviceUIDVolumeControlCapabilitiesForEndpoint:(id)a0 outputDeviceUID:(id)a1 queue:(id)a2; - (id)setMRAVOutputDeviceVolume:(float)a0 endpoint:(id)a1 outputDeviceUID:(id)a2 queue:(id)a3; @end