public bool TryAddNamespace(string @namespace, out ParserContainer container)
        {
            var createdContainer = new ParserContainer(@namespace);

            if (Namespaces.TryAdd(@namespace, createdContainer))
            {
                container = createdContainer;
                return(true);
            }
            container = null;
            return(false);
        }
 public bool TryGetNamespace(string @namespace, out ParserContainer container) => Namespaces.TryGetValue(@namespace, out container);