Find ranges in collection of ints

RangeFinder.cs

using System;
using System.Collections.Generic;
using System.Linq;

namespace Program
{
    internal class RangeFinder
    {
        public static IEnumerable<T> Create<T>(IEnumerable<int> items, Func<int, int, T> rangeCreator)
        {
            return items
                .OrderBy(v => v)
                .Select((v, i) => new { value = v, group = v - i })
                .GroupBy(b => b.group, b => b.value, (key,group) => rangeCreator(group.First(), group.Last()));
        }
    }
}