extract method

@override List extract(dynamic input)

Process input and extract necessary data.

• Note: the output is usually passed to the next extractor in the chain.

Implementation

@override
List extract(input) {
  final inputSource = StringTrimExtractor.prepareInputSource(input);

  if (inputSource == null) return [];

  return [inputSource].where((element) => element.isNotEmpty).toList();
}