code: public void refreshCachedValues() {
          if (noteColumn) {
              note = getHistoryReference().hasNote();
          }
          if (tagsColumn) {
              tags = listToCsv(getHistoryReference().getTags());
          }
          if (highestAlertColumn) {
              alertRiskCellItem = AlertRiskTableCellItem.getItemForRisk(getHistoryReference().getHighestAlert());
          }
      }
docs: Refresh the cached values of {@code HistoryReference}'s mutable fields.
  
  @see HistoryReference#getHighestAlert()
  @see HistoryReference#getTags()