@interface DICVolumeController : NSObject - (BOOL)setVolumeForCategory:(id)a0 volume:(float)a1 error:(id *)a2; - (BOOL)setVolumeForPhoneCall:(float)a0 error:(id *)a1; - (id)volumeForCategory:(id)a0 error:(id *)a1; - (id)volumeForPhoneCallWithError:(id *)a0; @end