Opc.Ua.Com.Server.ComAeNamespaceMapper.CompareCategories C# (CSharp) Method

        private static int CompareCategories(AeEventCategory x, AeEventCategory y)
        {
            if (Object.ReferenceEquals(x, y))
            {
                return 0;
            }

            if (Object.ReferenceEquals(x, null))
            {
                return (Object.ReferenceEquals(y, null))?0:-1;
            }
                     
            return x.Description.CompareTo(y.Description);
        }