System.Net.ServiceNameStore.AddSingleServiceName C# (CSharp) Method

        private bool AddSingleServiceName(string spn)
        {
            spn = NormalizeServiceName(spn);
            if (Contains(spn))
            {
                return false;
            }
            else
            {
                _serviceNames.Add(spn);
                return true;
            }
        }