[Finder]/[FinderBase] in the documentation of Matchers #168230
Description
I found what I think is an inconsistency in the documentation of Matchers in packages/flutter_test/lib/src/matchers.dart
Some of the Matchers are documented using [Finder] and the other using [FinderBase]. I think only one of the two should be used.
You can choose one and I would be happy to fix this documentation issue.
Example:
//github.com/ Asserts that the [FinderBase] matches nothing in the available candidates.
//github.com/
//github.com/ ## Sample code
//github.com/
//github.com/ ```dart
//github.com/ expect(find.text('Save'), findsNothing);
//github.com/ ```
//github.com/
//github.com/ See also:
//github.com/
//github.com/ * [findsAny], when you want the finder to find one or more candidates.
//github.com/ * [findsOne], when you want the finder to find exactly one candidate.
//github.com/ * [findsExactly], when you want the finder to find a specific number of candidates.
//github.com/ * [findsAtLeast], when you want the finder to find at least a specific number of candidates.
const Matcher findsNothing = _FindsCountMatcher(null, 0);//github.com/ Asserts that the [Finder] locates at exactly one widget in the widget tree.
//github.com/
//github.com/ This is equivalent to the preferred [findsOne] method.
//github.com/
//github.com/ ## Sample code
//github.com/
//github.com/ ```dart
//github.com/ expect(find.text('Save'), findsOneWidget);
//github.com/ ```
//github.com/
//github.com/ See also:
//github.com/
//github.com/ * [findsNothing], when you want the finder to not find anything.
//github.com/ * [findsAny], when you want the finder to find one or more candidates.
//github.com/ * [findsExactly], when you want the finder to find a specific number of candidates.
//github.com/ * [findsAtLeast], when you want the finder to find at least a specific number of candidates.
const Matcher findsOneWidget = _FindsCountMatcher(1, 1);