merge method

Implementation

CupertinoModalPopupOptions merge([CupertinoModalPopupOptions? options]) =>
    CupertinoModalPopupOptions(
        barrierDismissible: options?.barrierDismissible ?? barrierDismissible,
        useRootNavigator: options?.useRootNavigator ?? useRootNavigator,
        routeSettings: options?.routeSettings ?? routeSettings,
        barrierColor: options?.barrierColor ?? barrierColor,
        anchorPoint: options?.anchorPoint ?? anchorPoint,
        filter: options?.filter ?? filter,
        semanticsDismissible:
            options?.semanticsDismissible ?? semanticsDismissible);