public void GetAsyncThrowsForUnknownId()
{
var exception =
Assert.ThrowsAsync<AggregateNotFoundException>(async () => { var _ = await _sut.GetAsync(_model.UnknownIdentifier); });
Assert.That(exception.Identifier, Is.EqualTo(_model.UnknownIdentifier));
Assert.That(exception.ClrType, Is.EqualTo(typeof(AggregateRootEntityStub)));
}