using System;

using System.Threading.Tasks;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

    public static Task<IAsyncDisposable> SomeMethodWrong()

    {

        return Task.FromResult(new Release());

    }

    public static Task<IAsyncDisposable> SomeMethodRight()

    {

        return Task.FromResult((IAsyncDisposable)new Release());

    }

}

​

public class Release : IAsyncDisposable

{

    public ValueTask DisposeAsync()

        {

            throw new NotImplementedException();

        }

}