https://getstream.github.io/stream-chat-android/stream-chat-android-core/io.getstream.chat.android.models/-unread-channel/messages-count.html
messagesCount
https://getstream.github.io/stream-chat-android/stream-chat-android-core/io.getstream.chat.android.models/-unread-channel-by-type/messages-count.html
messagesCount