Make argument to featureValueOf dynamic (#164)
Similar to #163 changing the argument type from implicit `dynamic` to
`Object` for implementations that don't specify the type since inference
will pick the argument type from the overridden method.
diff --git a/lib/src/custom_matcher.dart b/lib/src/custom_matcher.dart
index fdd7791..4fd53e0 100644
--- a/lib/src/custom_matcher.dart
+++ b/lib/src/custom_matcher.dart
@@ -40,7 +40,7 @@
: _matcher = wrapMatcher(valueOrMatcher);
/// Override this to extract the interesting feature.
- Object? featureValueOf(Object? actual) => actual;
+ Object? featureValueOf(dynamic actual) => actual;
@override
bool matches(Object? item, Map matchState) {
