System.Collections.HashHelpers.GetEqualityComparerForSerialization C# (CSharp) Method

        public static object GetEqualityComparerForSerialization(object comparer)
        {
            if (comparer == null)
            {
                return null;
            }

            IWellKnownStringEqualityComparer cmp = comparer as IWellKnownStringEqualityComparer;

            if (cmp != null)
            {
                return cmp.GetEqualityComparerForSerialization();
            }

            return comparer;
        }