[FCM] Add completion handler to subscribe/unsubscribe topic actions

Added functionality not exposed in public header yet. I would leave to next FCM SDK owner to expose this functionality (and follow any required review process).

Bugs:
72701086

1 files changed, 1 insertions, 0 deletions

diff --git a/Firebase/Messaging/FIRMessagingTopicOperation.m b/Firebase/Messaging/FIRMessagingTopicOperation.m
index 90760eb..3120240 100644
--- a/Firebase/Messaging/FIRMessagingTopicOperation.m
+++ b/Firebase/Messaging/FIRMessagingTopicOperation.m
@@ -82,6 +82,7 @@ NSString *FIRMessagingSubscriptionsServer() {
     _topic = topic;
     _action = action;
     _token = token;
+    _options = options;
     _checkinService = checkinService;
     _completion = completion;