docs: public ImmunizationVaccinationProtocolComponent addVaccinationProtocol() { //3
        ImmunizationVaccinationProtocolComponent t = new ImmunizationVaccinationProtocolComponent();
        if (this.vaccinationProtocol == null)
          this.vaccinationProtocol = new ArrayList<ImmunizationVaccinationProtocolComponent>();
        this.vaccinationProtocol.add(t);
        return t;
      }