GroupChannelCollectionHandler constructor

1. sendbird_chat_sdk
2. sendbird_chat
3. GroupChannelCollectionHandler
4. GroupChannelCollectionHandler constructor

GroupChannelCollectionHandler class

1. Constructors
2. GroupChannelCollectionHandler
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. onChannelsAdded
9. onChannelsDeleted
10. onChannelsUpdated
11. toString
12. Operators
13. operator ==