public long getTotalLLLookaheadOps() {
		DecisionInfo[] decisions = atnSimulator.getDecisionInfo();
		long k = 0;
		for (int i = 0; i < decisions.length; i++) {
			k += decisions[i].LL_TotalLook;
		}
		return k;
	}
Gets the total number of LL lookahead operations across all decisions
made during parsing. This value is the sum of
{@link DecisionInfo#LL_TotalLook} for all decisions.
runtime/Java/src/org/antlr/v4/runtime/atn/ParseInfo.java