public void ConnectApp(
            string appId,
            string authCredentials,
            Action <FfiResult, IntPtr, GCHandle> oCb)
        {
            var userData = BindingUtils.ToHandlePtr(oCb);

            ConnectAppNative(appId, authCredentials, userData, DelegateOnFfiResultSafeCb);
        }
        public void AppRegistered(
            string appId,
            string authCredentials,
            Action <FfiResult, IntPtr, GCHandle> oCb)
        {
            var userData = BindingUtils.ToHandlePtr(oCb);

            AppRegisteredNative(appId, authCredentials, userData, DelegateOnAppCreateCb);
        }