Cast Exception on using tokenAdditionalParameters Map

[svendroid]

When using the method token of method_channel_flutter_appauth.dart the tokenAdditionalParameters attribute of the returned TokenResponse throws following Exception, as soon as I use it:

[VERBOSE-2:ui_dart_state.cc(157)] Unhandled Exception: type 'int' is not a subtype of type 'String' in type cast
#0      CastMap.forEach.<anonymous closure> (dart:_internal/cast.dart:288:25)
#1      _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:379:8)
#2      CastMap.forEach (dart:_internal/cast.dart:287:13)
#3      MapBase.mapToString (dart:collection/maps.dart:35:9)
#4      MapMixin.toString (dart:collection/maps.dart:192:32)
#5      _StringBase._interpolate (dart:core-patch/string_patch.dart:845:19)

The cause for this problem is the cast in this line

flutter_appauth/flutter_appauth_platform_interface/lib/src/method_channel_flutter_appauth.dart

Line 65 in 1230109

result['tokenAdditionalParameters']?.cast<String, String>());

it should be cast to
result['tokenAdditionalParameters']?.cast<String, dynamic>());.

[MaikuB]

Oh bugger, thanks for picking up on that!

[svendroid]

Should I provide a pull request? I would only need to push it

[MaikuB]

If you could then that would be great. I don't think I've done it I've setup a template for this repo yet but can you prefix the PR's title with [flutter_appauth_platform_interface] as well?