text: /* Generated by RuntimeBrowser
     Image: /System/Library/PrivateFrameworks/CoreKnowledge.framework/CoreKnowledge
   */
  
  @interface CoreKnowledge.CKDeviceActivityStore : NSObject <CoreKnowledge.CKDeviceActivityStorePrivate, CoreKnowledge.CKReadableDeviceActivityStore, CoreKnowledge.CKWritableDeviceActivityStore> {
      void store;
  }
  
  @property (nonatomic, readonly) _TtC13CoreKnowledge16CKKnowledgeStore *backingStore;
  
  + (id)dateFormat;
  
  - (id /* block */).cxx_destruct;
  - (id)backingStore;
  - (bool)deleteActivityWithIdentifier:(id)arg1 error:(id*)arg2;
  - (id)init;
  - (bool)recordActivityWithIdentifier:(id)arg1 startDate:(id)arg2 endDate:(id)arg3 error:(id*)arg4;
  - (id)recordedActivities;
  - (id)recordedActivityWithIdentifier:(id)arg1;
  - (bool)setFirstSeen:(id)arg1 forActivityId:(id)arg2 error:(id*)arg3;
  - (bool)setFrequency:(long long)arg1 forActivityId:(id)arg2 error:(id*)arg3;
  - (bool)setLastDuration:(double)arg1 forActivityId:(id)arg2 error:(id*)arg3;
  - (bool)setLastSeen:(id)arg1 forActivityId:(id)arg2 error:(id*)arg3;
  - (bool)setTotalDuration:(double)arg1 forActivityId:(id)arg2 error:(id*)arg3;
  
  @end
  