public override bool Equals(object obj)
        {
            GrammarBuilderWildcard refObj = obj as GrammarBuilderWildcard;

            return(refObj != null);
        }
        public override bool Equals(object obj)
        {
            GrammarBuilderWildcard grammarBuilderWildcard = obj as GrammarBuilderWildcard;

            return(grammarBuilderWildcard != null);
        }