Antlr4.Runtime.Atn.ATN.DefineMode C# (CSharp) Method

        public virtual void DefineMode(string name, TokensStartState s)
        {
            modeNameToStartState[name] = s;
            modeToStartState.Add(s);
            modeToDFA = Arrays.CopyOf(modeToDFA, modeToStartState.Count);
            modeToDFA[modeToDFA.Length - 1] = new DFA(s);
            DefineDecisionState(s);
        }