def is_section(self):
return not self.is_sequestered()<EOL>
Tests if this part should be visible as a section in an assessment.

        If visible, this part will appear to the user as a separate
        section of the assessment. Typically, a section may not be under
        a non-sectioned part.

        return: (boolean) - ``true`` if this part is a section,
                ``false`` otherwise
        *compliance: mandatory -- This method must be implemented.*