in src/dotnet/JetBrains.PresentationAssistant/WpfPopupWindow.cs [18:27]
protected WpfPopupWindow(LifetimeDefinition lifetimeDefinition, IPopupWindowContext context,
PopupWindowMutex mutex, PopupWindowManager popupWindowManager,
Window window, HideFlags hideFlags = HideFlags.None)
: base(lifetimeDefinition, context, mutex, hideFlags)
{
this.window = window;
UpdatePopupLayout();
AttachEvents(popupWindowManager);
}