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- (void) foo { NSArray* a = @[]; NSDictionary* b = @{}; NSArray<NSString*>* array = @[ @"hello", @"world" ]; NSDictionary<NSString*, NSString*>* dictionary = @{ @"foo": @"bar", @"foo2": @"bar2" }; NSString* const type = [pasteboard availableTypeFromArray:@[ NSPasteboardTypeString ]]; }