BplusDotNet.xBucket.NextKey C# (CSharp) Метод

        public string NextKey(string AfterThisKey)
        {
            int index = 0;
            while (index<this.keys.Count)
            {
                string thiskey = (string) this.keys[index];
                if (this.owner.Compare(thiskey, AfterThisKey)>0)
                {
                    return thiskey;
                }
                index++;
            }
            return null;
        }