*/
public final synchronized void setPrecedenceDfa(boolean precedenceDfa) {
if (this.precedenceDfa != precedenceDfa) {
this.states.clear();
if (precedenceDfa) {
DFAState precedenceState = new DFAState(new ATNConfigSet());
precedenceState.edges = new DFAState[0];
precedenceState.isAcceptState = false;
precedenceState.requiresFullContext = false;
this.s0 = precedenceState;
}