remove one blank line

(Will do it in batch with my other PRs)

?

I am not sure how to test this: This PR fixes the FlutterErrorDetails.context field, but here, takeException does not expose the FlutterErrorDetails (but only FlutterErrorDetails.exception).

Thus, I wonder how should I test it? e.g.

Method 1: Add a new method in parallel to takeException and expose the whole FlutterErrorDetails.
Method 2: Do not test it (I think this is bad)

Wouldn't the toString of the exception contain something that was added by invokeCallback that you can look for in the test here?

Hmm,

    print(tester.binding.takeException().toString());

yields:

Exception: deliberate

So I guess it does not add anything.

The proposal is that, in addition to the existing code:

  dynamic takeException() {
    assert(inTest);
    final dynamic result = _pendingExceptionDetails?.exception;
    _pendingExceptionDetails = null;
    return result;
  }
  FlutterErrorDetails? _pendingExceptionDetails;

We can add:

FlutterErrorDetails takeErrorDetails() {
    assert(inTest);
    final FlutterErrorDetails result = _pendingExceptionDetails; // <-- NOTE
    _pendingExceptionDetails = null;
    return result;
}

I can create a separate PR for that (given that Flutter guide seems to prefer one PR to do one thing)

This shouldn't need new API. Can you get to the error with a custom onError handler? https://master-api.flutter.dev/flutter/foundation/FlutterError/onError.html

I will try that. Thanks!