Antlr4.Tool.LexerGrammar.UndefineRule C# (CSharp) Method

        public override bool UndefineRule(Rule r)
        {
            if (!base.UndefineRule(r))
            {
                return false;
            }

            bool removed = modes[r.mode].Remove(r);
            Debug.Assert(removed);
            return true;
        }
    }