internal static bool IsElementAMarkupExtension(XElement element, ReflectionOnSeparateAppDomainHandler reflectionOnSeparateAppDomain)
        {
            string elementLocalName, elementNameSpace, assemblyNameIfAny;

            GetClrNamespaceAndLocalName(element.Name, out elementNameSpace, out elementLocalName, out assemblyNameIfAny);
            return(reflectionOnSeparateAppDomain.IsElementAMarkupExtension(elementNameSpace, elementLocalName, assemblyNameIfAny));
        }