Add skeletal implementations of methods

Headers/Foundation/NSUserActivity.h

@@ -58,11 +58,16 @@ GS_EXPORT_CLASS
   NSDate *_expirationDate;
   NSSet *_keywords;
   id<NSUserActivityDelegate> _delegate;
-  NSString *_targetContentIndentifier;
-
+  NSString *_targetContentIdentifier;
+  NSString *_persistentIdentifier;
+  
   BOOL _supportsContinuationStreams;
   BOOL _needsSave;
   BOOL _valid;
+  BOOL _eligibleForPrediction;
+  BOOL _eligibleForPublicIndexing;
+  BOOL _eligibleForSearch;
+  BOOL _eligibleForHandoff;
 }
 
 - (instancetype) initWithActivityType: (NSString *)activityType;

Source/NSUserActivity.m

@@ -26,5 +26,205 @@
 
 @implementation NSUserActivity
 
-@end
+- (instancetype) initWithActivityType: (NSString *)activityType
+{
+  self = [super init];
+  if (self != nil)
+    {
+    }
 
+  return self;
+}
+
+- (instancetype) init
+{
+  self = [super init];
+  if (self != nil)
+    {
+    }
+
+  return self;
+} 
+
+- (void) becomeCurrent
+{
+}
+
+- (void) resignCurrent
+{
+}
+
+- (void) invalidate
+{
+  _valid = NO;
+}
+
+- (void) getContinuationStreamsWithCompletionHandler: (GSContinuationStreamsCompletionHandler)handler
+{
+}
+
++ (void) deleteSavedUserActivitiesWithPersistentIdentifiers: (NSArray *)persistentIdentifies completionHandler: (GSDeleteSavedCompletionHandler)handler
+{
+}
+
++ (void) deleteAllSavedUserActivitiesWithCompletionHandler: (GSDeleteSavedCompletionHandler)handler
+{
+}
+
+// properties...
+- (NSString *) activityType
+{
+  return _activityType;
+}
+
+- (NSString *) title
+{
+  return _title;
+}
+
+- (void) setTitle: (NSString *)title
+{
+  ASSIGNCOPY(_title, title);
+}
+
+- (NSDictionary *) userInfo
+{
+  return _userInfo;
+}
+
+- (void) setUserInfo: (NSDictionary *)userInfo
+{
+  ASSIGNCOPY(_userInfo, userInfo);
+}
+
+- (BOOL) needsSave
+{
+  return _needsSave;
+}
+
+- (void) setNeedsSave: (BOOL)needsSave
+{
+  _needsSave = needsSave;
+}
+
+- (NSURL *) webpageURL
+{
+  return _webpageURL;
+}
+
+- (void) setWebpageURL: (NSURL *)url
+{
+  ASSIGNCOPY(_webpageURL, url);
+}
+
+- (NSURL *) referrerURL
+{
+  return _referrerURL;
+}
+
+- (void) setReferrerURL: (NSURL *)url
+{
+  ASSIGNCOPY(_referrerURL, url);
+}
+
+- (NSDate *) expirationDate
+{
+  return _expirationDate;
+}
+
+- (void) setExpirationDate: (NSDate *)date
+{
+  ASSIGNCOPY(_expirationDate, date);
+}
+
+- (NSSet *) keywords
+{
+  return _keywords;
+}
+
+- (void) setKeywords: (NSArray *)keywords
+{
+  ASSIGNCOPY(_keywords, keywords);
+}
+
+- (BOOL) supportsContinuationStreams
+{
+  return _supportsContinuationStreams;
+}
+
+- (void) setSupportsContinuationStreams: (BOOL)flag
+{
+  _supportsContinuationStreams = flag;
+}
+
+- (id<NSUserActivityDelegate>) delegate
+{
+  return _delegate;
+}
+
+- (void) setDelegate: (id<NSUserActivityDelegate>)delegate
+{
+  _delegate = delegate;
+}
+
+- (NSString *) targetContentIdentifier
+{
+  return _targetContentIdentifier;
+}
+
+- (void) setTargetContentIdentifier: (NSString *)targetContentIdentifier
+{
+  ASSIGNCOPY(_targetContentIdentifier, targetContentIdentifier);
+}
+
+- (BOOL) isEligibleForHandoff
+{
+  return _eligibleForHandoff;
+}
+
+- (void) setEligibleForHandoff: (BOOL)f
+{
+  _eligibleForHandoff = f;
+}
+
+- (BOOL) isEligibleForSearch
+{
+  return _eligibleForSearch;
+}
+
+- (void) setEligibleForSearch: (BOOL)f
+{
+  _eligibleForSearch = f;
+}
+
+- (BOOL) isEligibleForPublicIndexing
+{
+  return _eligibleForPublicIndexing;
+}
+
+- (void) setEligibleForPublicIndexing: (BOOL)f
+{
+  _eligibleForPublicIndexing = f;
+}
+
+- (BOOL) isEligibleForPrediction
+{
+  return _eligibleForPrediction;
+}
+
+- (void) setEligibleForPrediction: (BOOL)f
+{
+  _eligibleForPrediction = f;
+}
+
+- (NSUserActivityPersistentIdentifier) persistentIdentifier
+{
+  return _persistentIdentifier;
+}
+
+- (void) setPersistentIdentifier: (NSUserActivityPersistentIdentifier)persistentIdentifier
+{
+  ASSIGNCOPY(_persistentIdentifier, persistentIdentifier);
+}
+
+@end