ect as we iterate through the rows. Stop rendering children
            and close out the "tbody" element if the "rowAvailable" property
            of the <code>UIData</code> returned false. If the
            current row
            index is contained in the "bodyrows" attribute, check if a "tbody"
            start element was rendered that needs to be closed, and if so,
            close the "tbody" element. Then render a "tbody" element start.
            Otherwise, do not render a "tbody" element.</p>