public class CreateFeedbackCommand : ICommand
{
    private readonly IFactory factory;
    private readonly IEngine engine;

    public CreateFeedbackCommand(IFactory factory, IEngine engine)
    {
        this.factory = factory;
        this.engine = engine;
    }

    public string Execute(IList<string> parameters)
    {

        string title;
        string description;
        string strType;
        //WorkItemType workItemType;
        try
        {
            title = parameters[0].ToString();

            description = parameters[1].ToString();

            strType = parameters[2].ToString();

        }
        catch (Exception ex)
        {
            throw new ArgumentException("Failed to parse CreateFeedback command parameters.");
        }
        if (strType.ToLower() == WorkItemType.feedback.ToString())
        {

        }
        else
        {
            throw new ArgumentException("Feedback could be only of type feedback");
        }

        var feedback = this.factory.CreateFeedback(title, description, strType);
        this.engine.WorkItemsList.Add((IWorkItem)feedback);

        return feedback.Print();
    }


}