public void copyState(LexerATNSimulator simulator) {
		this.charPositionInLine = simulator.charPositionInLine;
		this.line = simulator.line;
		this.mode = simulator.mode;
		this.startIndex = simulator.startIndex;
	}
Used during DFA/ATN exec to record the most recent accept configuration info
runtime/Java/src/org/antlr/v4/runtime/atn/LexerATNSimulator.java