AllJoynUnity.AllJoyn.KeyStoreListener.KeyStore.GetKeys C# (CSharp) Method

                public string GetKeys()
                {
                    int sinkSz = 512;
                    byte[] sink;
                    QStatus status;
                    do
                    {
                        sinkSz *= 2;
                        sink = new byte[sinkSz];
                        GCHandle gch = GCHandle.Alloc(sink, GCHandleType.Pinned);
                        status = alljoyn_keystorelistener_getkeys(_keyStoreListener, _keyStore,
                            gch.AddrOfPinnedObject(), (UIntPtr)sinkSz);
                        gch.Free();
                    } while(status != QStatus.OK);

                    return System.Text.ASCIIEncoding.ASCII.GetString(sink);
                }