docs: @SuppressWarnings({"unused", "WeakerAccess"})
      public int getInboxMessageUnreadCount(){
          synchronized (inboxControllerLock) {
              if (this.ctInboxController != null) {
                  return ctInboxController.unreadCount();
              } else {
                  getConfigLogger().debug(getAccountId(), "Notification Inbox not initialized");
                  return -1;
              }
          }
      }