public override void ExitRule(IParseTreeListener listener)
            {
                ISICListener typedListener = listener as ISICListener;

                if (typedListener != null)
                {
                    typedListener.ExitChecarInstru(this);
                }
            }
            public override void EnterRule(IParseTreeListener listener)
            {
                ISICListener typedListener = listener as ISICListener;

                if (typedListener != null)
                {
                    typedListener.EnterChecarEtiq(this);
                }
            }