Run tests last - Order attribute case

While having the order attribute is great for tests that need to run first / or in a given order, it would be great to also have an attribute for running specific tests last.

Our solution looks like this:

[Test, Order(1)]
public void TestA() { ... }

[Test, Order(2)]
public void TestB() { ... }

[Test]
public void TestC() { ... }

[Test, {shouldRunLast in order(1)}]
public void TestD()

We have some quick integration tests which should run first. We have "normal" tests which don't have the order attribute and we have some very long running tests that should run last.

You can see that it would be a problem to give all "normal" tests an arbitrary order number just so the long running tests are ran last. A "LastOrder(n)" attribute would be appreciated.

The issue names the existing Order attribute and provides C# examples, but no repository files or tests. Start by locating the Order attribute documentation and implementation, then inspect related test coverage; done means the last-order behavior and its interaction with unordered tests are documented and verified.