clojure.lang.Keyword.operator C# (CSharp) Method

        public static bool operator !=(Keyword k1, Keyword k2)
        {
            if (ReferenceEquals(k1, k2))
                return false;

            if (ReferenceEquals(k1, null) || ReferenceEquals(k2,null))
                return true;

            return k1.CompareTo(k2) != 0;
        }