Hi Siva,
There is no way to do exactly what you asked.
Section and its contents are very loosely connected only.
When it renders as HTML page, the section will be the parent table structure for its contents, but I don't recommend digging into DOM too deep.
Instead this might be an acceptable workaround:
You could name your widget ids in that section with some unique prefex/suffix and loop if statement using
RMPWidgets.getAllWidgets()
or similar, and filter it like, if id contains keyword ...
Like,
id_section-name_widget-name
Best regards,
Taka