'Plugin entry point, find feeds.
:param request: The HTTP request object.
:param response: The HTTP response object
:return: None'

def grep(self, request, response):

    uri = response.get_uri()
    for tag in mp_doc_parser.get_tags_by_filter(response, self.TAGS):
        feed_tag = tag.name
        feed_type = self._feed_types[feed_tag.lower()]
        version = tag.attrib.get('version', 'unknown')
        fmt = 'The    URL    "%s"    is    a    %s    version    %s    feed.'
        desc = (fmt % (uri, feed_type, version))
        i = Info('Content    feed    resource', desc, response.id, self.get_name())
        i.set_uri(uri)
        i.add_to_highlight(feed_type)
        self.kb_append_uniq(self, 'feeds', i, 'URL')
