def METHOD_NAME(self, response):
    """
    `parse` should always `yield` Meeting items.
    Change the `_parse_title`, `_parse_start`, etc methods to fit your scraping
    needs.
    """
    if "60 East Van Buren" not in response.text:
        raise ValueError("Meeting address has changed")
    self.upcoming_meetings = self._parse_upcoming(response)
    yield scrapy.Request(
        "http://www.thecha.org/about/board-meetings-agendas-and-resolutions/board-meeting-notices",  # noqa
        callback=self._parse_next,
        dont_filter=True,
    )