whereMixed method

Creates a WidgetSelector that finds all Semantics where mixed matches the condition.

Example usage:

spot<Semantics>().whereMixed((it) => it.isTrue()).existsOnce();

Implementation

@useResult
WidgetSelector<Semantics> whereMixed(MatchProp<bool> match) {
  return withDiagnosticProp<bool>('mixed', match);
}