public virtual void ReportNondeterminism( DFAState d, HashSet<int> nondeterministicAlts )
{
_altsWithProblem.UnionWith( nondeterministicAlts ); // track overall list
_statesWithSyntacticallyAmbiguousAltsSet.Add( d );
_dfa.Nfa.Grammar.setOfNondeterministicDecisionNumbers.Add(
_dfa.NfaStartStateDecisionNumber
);
}