AsyncCommands.cs

public class AsyncCommand1 : IAsyncCommand
{
  public Task ExecuteAsync()
  {
    int x = 2 + 2;
    return Task.FromResult(true);
  }
}
 
public class AsyncCommand2 : IAsyncCommand
{
  public async Task ExecuteAsync()
  {
    int x = 2 + 2;
  }
}
 
public class AsyncCommand3 : IAsyncCommand
{
  public Task ExecuteAsync()
  {
    return Task.Run(() => { int x = 2 + 2; })
  }
}