How do you mock an IAsyncEnumerable?

I want to unit test a method that calls another method of a service returning an IAsyncEnumerable<T>. I have created a a mock of my service Mock<MyService> and I want to setUp this mock but I don't know how to do that. Is it possible ? Are there other ways of unit testing a method that calls something retuning an IAsyncEnumerable

public async Task<List<String>> MyMethodIWantToTest()
{
  var results = new List<string>();
  await foreach(var item in _myService.CallSomethingReturningAsyncStream())
  {
    results.Add(item);
  }
  return results;
}