src/vs/workbench/services/host/browser/browserHostService.ts/BrowserHostService/openWindow
class BrowserHostService:	openWindow(arg1?: IOpenEmptyWindowOptions | IWindowOpenable[], arg2?: IOpenWindowOptions): Promise<void> {
		if (Array.isArray(arg1)) {
			return this.doOpenWindow(arg1, arg2);
		}

		return this.doOpenEmptyWindow(arg1);
	}