IArgumentCompleter Create();

[DirectoryCompleter(ContainingFile="pswh.exe", Depth=2)]

[DateCompleter(WeekDay='Monday', From="LastYear")]

[GitCommits(Branch='release')]

   /// <summary>
    /// Creates new number completions
    /// </summary>
    public class NumberCompletionsAttribute : ArgumentCompleterFactoryAttribute
    {
        private readonly int _from;
        private readonly int _to;
        private readonly int _step;

        public NumberCompletionsAttribute(int from, int to, int step = 1) 
        {
            _from = @from;
            _to = to;
            _step = step;
        }

        public IArgumentCompleter Create() => new NumberCompleter(_from, _to, _step);
    }

 public class NumberCompleter : IArgumentCompleter
    private readonly int _from;
    private readonly int _to;
    private readonly int _step;

    public NumberCompleter(int from, int to, int step)
    {
        _from = @from;
        _to = to;
        _step = step;
    }

    public IEnumerable<CompletionResult> CompleteArgument(string commandName, string parameterName, string wordToComplete, CommandAst commandAst, IDictionary fakeBoundParameters)
        {
/// complete using the passed parameters
        }
    }