openLink method
A method that opens a link in an external browser. The Mini App will not be closed. Bot API 6.4+ If the optional options parameter is passed with the field try_instant_view=true, the link will be opened in Instant View mode if possible.
Note that this method can be called only in response to user interaction with the Mini App interface (e.g. a click inside the Mini App or on the main button)
Implementation
@override
void openLink(String url, {bool tryInstantView = true}) {
print("Mocked open link for $url, tryInstantView: $tryInstantView");
}