def METHOD_NAME(self, response):
    ssa_num = re.search(r"#\d{1,2}", self.agency).group()
    for item in response.css(".mn-cal-event a"):
        item_text = " ".join(item.css("*::text").extract())
        if ssa_num in item_text:
            yield response.follow(item.attrib["href"], callback=self._parse_detail)