docs: public Enumeration<ParticipantType> addParticipantTypeElement() {//2 
        Enumeration<ParticipantType> t = new Enumeration<ParticipantType>(new ParticipantTypeEnumFactory());
        if (this.participantType == null)
          this.participantType = new ArrayList<Enumeration<ParticipantType>>();
        this.participantType.add(t);
        return t;
      }