public OrderWhen() {
     this.scheduleField = new Timing();
     this.codeField = new CodeableConcept();
 }
 public MedicationStatementDosage() {
     this.maxDosePerPeriodField = new Ratio();
     this.rateField = new Ratio();
     this.quantityField = new Quantity();
     this.methodField = new CodeableConcept();
     this.routeField = new CodeableConcept();
     this.siteField = new CodeableConcept();
     this.itemField = new Element();
     this.scheduleField = new Timing();
 }