Collections Data Structure C#

//The MIT License (MIT)
//http://arolibraries.codeplex.com/license
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading;
namespace AroLibraries.ExtensionMethods.Enumerable
{
    public static class IEnumerableExt
    {
        public static IEnumerable Ext_StopUntile(this IEnumerable dumySource, Predicate predicate)
        {
            foreach (TSource item in dumySource)
            {
                if (predicate(item))
                {
                    yield break;
                }
                yield return item;
            }
        }
    }
}