addError method
Reports an error which triggers onError with an optional StackTrace.
Implementation
@mustCallSuper
void addError(Object error, [StackTrace? stackTrace]) {
  onError(error, stackTrace ?? StackTrace.current);
}Reports an error which triggers onError with an optional StackTrace.
@mustCallSuper
void addError(Object error, [StackTrace? stackTrace]) {
  onError(error, stackTrace ?? StackTrace.current);
}