System.Runtime.Serialization.Json.XmlJsonWriter.LookupPrefix C# (CSharp) Method

        public override string LookupPrefix(string ns)
        {
            if (ns == null)
            {
                throw new ArgumentNullException(nameof(ns));
            }
            if (ns == Globals.XmlnsNamespace)
            {
                return Globals.XmlnsPrefix;
            }
            if (ns == xmlNamespace)
            {
                return JsonGlobals.xmlPrefix;
            }
            if (ns == string.Empty)
            {
                return string.Empty;
            }
            return null;
        }