如何在Powershell中使用扩展方法？

I have the following code:

我有以下代码：

using System
public static class IntEx
{
    /// <summary>
    /// Yields a power of the given number
    /// </summary>
    /// <param name="number">The base number</param>
    /// <param name="powerOf">the power to be applied on te base number</param>
    /// <returns>Powers applied to  the base number</returns>
    public static IEnumerable<int> ListPowersOf(this int number, int powerOf)
    {
        for (var i = number; ; i <<= powerOf)
        {
            yield return i;
        }
    }
}
using Sy