docs: public ClinicalImpressionInvestigationsComponent addInvestigations() { //3
        ClinicalImpressionInvestigationsComponent t = new ClinicalImpressionInvestigationsComponent();
        if (this.investigations == null)
          this.investigations = new ArrayList<ClinicalImpressionInvestigationsComponent>();
        this.investigations.add(t);
        return t;
      }