onFindResultReceived property Null safety
Event fired as find-on-page operations progress.
The listener may be notified multiple times while the operation is underway, and the numberOfMatches value should not be considered final unless
isDoneCounting is true.
activeMatchOrdinal represents the zero-based ordinal of the currently selected match.
numberOfMatches represents how many matches have been found.
isDoneCounting whether the find operation has actually completed.
final void Function(InAppWebViewController controller, int activeMatchOrdinal, int numberOfMatches, bool isDoneCounting)? onFindResultReceived;