/// <summary> /// Decrement API instance count and cleanup if this is the last one. /// </summary> private void StopAPI() { if (startCount > 0) { --startCount; if (startCount == 0) { MLDevice.Unregister(this.Update); MLDevice.UnregisterOnApplicationPause(this.OnApplicationPause); this.CleanupAPI(true); if (this.perceptionHasStarted) { this.perceptionHandle.Dispose(); this.perceptionHasStarted = false; } _instance = null; } } }