can you add placeholder:CircularProgressIndicator() for InAppWebView

[ushang000]

example used LinearProgressIndicator(),but i want to use CircularProgressIndicator() and location at Center, such as placeholder of InAppWebView,
can you add it? or hava any idea.
3Q

[pichillilorenzo]

Created an example project using both progress indicators at: https://github.com/pichillilorenzo/flutter_inappwebview_examples/tree/main/progress_indicator