public static void LoginWithAnonymous(long roomId, AnonymousInfo anonymityInfo, LoginData loginData = null) { string loginJson = string.Empty; if (loginData != null) { loginJson = loginData.Serialize(); } if (anonymityInfo == null) { return; } string anonymity_info = anonymityInfo.Serialize(); ChatRoomNativeMethods.nim_chatroom_enter_with_anoymity(roomId, anonymity_info, loginJson, null); }