docs: @Read
  public Patient read(@IdParam IdDt theId) {
     if (databaseIsDown) {
        OperationOutcome oo = new OperationOutcome();
        oo.addIssue().setSeverity(IssueSeverityEnum.FATAL).setDetails("Database is down");
        throw new InternalErrorException("Database is down", oo);
     }
     
     Patient patient = new Patient(); // populate this
     return patient;
  }