private void showActionMenu(final DataRetentionRule row, final NativeEvent event) {
        final PopupPosition popupPosition = new PopupPosition(event.getClientX() + 10, event.getClientY());
        final List<Item> items = actionMenuItemProvider.apply(row);
        ShowMenuEvent
                .builder()
                .items(items)
                .popupPosition(popupPosition)
                .fire(this);
    }
Add the columns to the table.
stroom-core-client/src/main/java/stroom/receive/rules/client/presenter/DataRetentionPolicyListPresenter.java