/// <summary>
 /// Lookup a prefix namespace based on the namespace.
 /// </summary>
 /// <param name="uri"></param>
 /// <returns></returns>
 public virtual string LookupPrefix(string uri)
 {
     return(NamespaceManager.LookupPrefix(uri));
 }
 /// <copydocfrom cref="IXmlMappingEngine.LookupPrefix" />
 public string LookupPrefix(string xmlNamespace)
 {
     return(NamespaceManager.LookupPrefix(xmlNamespace));
 }