fieldsErrorProvider method

@override StreamErrorsProvider<K> fieldsErrorProvider(Iterable<K> fields)

Provides ErrorsProvider with validation errors from multiple fields.

ErrorsProvider.value gives sync access to current validation errors

Implementation

@override
StreamErrorsProvider<K> fieldsErrorProvider(Iterable<K> fields) =>
    MappedStreamErrorsProvider<K>(fields, _streamController.stream);