exceptionCauseExtractor method
Returns a previously added ExceptionCauseExtractor by type
Implementation
ExceptionCauseExtractor? exceptionCauseExtractor(Type type) {
  return _causeExtractorsByType[type];
}Returns a previously added ExceptionCauseExtractor by type
ExceptionCauseExtractor? exceptionCauseExtractor(Type type) {
  return _causeExtractorsByType[type];
}