def METHOD_NAME(self):
    catalog = api.portal.get_tool('portal_catalog')
    sort_order = 'ascending'
    if self.settings.sort_reverse or self.settings.sort_reverse is None:
        sort_order = 'reverse'
    return catalog(
        path={
            'query': '/'.join(self.context.getPhysicalPath()),
            'depth': 1
        },
        sort_order=sort_order,
        sort_on=self.settings.sort_on or 'effective',
        sort_limit=self.settings.limit or 15)