AIMA.Core.Logic.FOL.Domain.FOLDomain.addAnswerLiteral C# (CSharp) Method

        public String addAnswerLiteral()
        {
            String al = null;
            do
            {
                al = "Answer" + (answerLiteralIndexical++);
            } while (constants.Contains(al) || functions.Contains(al)
                    || predicates.Contains(al));

            addPredicate(al);
            notifyFOLDomainListeners(new FOLDomainAnswerLiteralAddedEvent(this, al));

            return al;
        }