"Introduces IAsyncEnumerable, IAsyncEnumerator, ForEachAsync(), and ParallelForEachAsync()GitHub: https://github.com/Dasync/AsyncEnumerablePROBLEM SPACEHelps to (a) create an element provider, where producing an element can take a lot of timedue to dependency on other asynchronous events (e.g. wait handles, network streams), and(b) a consumer that processes those element as soon as they are ready without blockingthe thread (the processing is scheduled on a worker thread instead).EXAMPLEusing Dasync.Collections;static IAsyncEnumerable<int> ProduceAsyncNumbers(int start, int end){  return new AsyncEnumerable<int>(async yield => {    // Just to show that ReturnAsync can be used multiple times    await yield.ReturnAsync(start);    for (int number = start + 1; number <= end; number++)      await yield.ReturnAsync(number);    // You can break the enumeration loop with the following call:    yield.Break();    // This won't be executed due to the loop break above    await yield.ReturnAsync(12345);  });}// Just to compare with synchronous version of enumeratorstatic IEnumerable<int> ProduceNumbers(int start, int end){  yield return start;  for (int number = start + 1; number <= end; number++)    yield return number;  yield break;  yield return 12345;}static async Task ConsumeNumbersAsync(){  var asyncEnumerableCollection = ProduceAsyncNumbers(start: 1, end: 10);  await asyncEnumerableCollection.ForEachAsync(async number => {    await Console.Out.WriteLineAsync($"{number}");  });}// Just to compare with synchronous version of enumerationstatic void ConsumeNumbers(){  var enumerableCollection = ProduceNumbers(start: 1, end: 10);  foreach (var number in enumerableCollection) {    Console.Out.WriteLine($"{number}");  }}"