private IterationStatus getRepeatStatus() {
        return new IterationStatus(_count == 0, _index + getStep() >= getDataModel().getRowCount(),
                _count, _index, getOffset(), _end, getStep());
    }
Handle case where this table is nested inside another table. See method getDataModel for more details.
<p>
Key: parentClientId (aka rowId when nested within a parent table) Value: DataModel
primefaces/src/main/java/org/primefaces/component/api/UITabPanel.java