getCachedFilenames method Null safety

List<String> getCachedFilenames()

Returns a list of possible related cached filenames.

Implementation

@protected
List<String> getCachedFilenames() {
  final List<String> result = <String>[];
  final String? filename = getFilename();
  if (filename == null) {
    return result;
  }
  result.add(getCacheFilename(filename));
  return result;
}