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-rw-r--r--SmartDeviceLink/SDLAlertResponse.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/SmartDeviceLink/SDLAlertResponse.h b/SmartDeviceLink/SDLAlertResponse.h
index beca991f1..f3269c709 100644
--- a/SmartDeviceLink/SDLAlertResponse.h
+++ b/SmartDeviceLink/SDLAlertResponse.h
@@ -8,8 +8,13 @@
* Sent after SDLAlert has been sent
* @since SDL 1.0
*/
+
+NS_ASSUME_NONNULL_BEGIN
+
@interface SDLAlertResponse : SDLRPCResponse
-@property (strong) NSNumber<SDLInt> *tryAgainTime;
+@property (nullable, strong) NSNumber<SDLInt> *tryAgainTime;
@end
+
+NS_ASSUME_NONNULL_END