private static IDesignModeClient InitializeDesignMode(int parentProcessId, IProcessHelper processHelper) { if (parentProcessId > 0) { processHelper.SetExitCallback(parentProcessId, (obj) => { EqtTrace.Info($"PortArgumentProcessor: parent process:{parentProcessId} exited."); DesignModeClient.Instance?.HandleParentProcessExit(); }); } DesignModeClient.Initialize(); return(DesignModeClient.Instance); }