AllJoynUnity.AllJoyn.SessionListener.SessionListener C# (CSharp) Метод

            public SessionListener()
            {
                _sessionLost = new InternalSessionLost(_SessionLost);
                _sessionMemberAdded = new InternalSessionMemberAdded(_SessionMemberAdded);
                _sessionMemberRemoved = new InternalSessionMemberRemoved(_SessionMemberRemoved);

                #if UNITY_ANDROID
                _sessionListener = alljoyn_unitysessionlistener_create(this, _sessionLost,
                    _sessionMemberAdded, _sessionMemberRemoved);
                #else
                SessionListenerCallbacks callbacks;
                callbacks.sessionLost = Marshal.GetFunctionPointerForDelegate(_sessionLost);
                callbacks.sessionMemberAdded = Marshal.GetFunctionPointerForDelegate(_sessionMemberAdded);
                callbacks.sessionMemberRemoved = Marshal.GetFunctionPointerForDelegate(_sessionMemberRemoved);

                GCHandle gch = GCHandle.Alloc(callbacks, GCHandleType.Pinned);
                _sessionListener = alljoyn_sessionlistener_create(gch.AddrOfPinnedObject(), IntPtr.Zero);
                gch.Free();
                #endif
            }