code: def find_xml_all(cls, url, markup, tag, pattern):
          
          body = cls.find_xml(url, markup)
          return body.find_all(tag, href=re.compile(pattern))
docs: find xml(list)
          :param url: contents url
          :param markup: markup provider
          :param tag: find tag
          :param pattern: xml file pattern
          :return: BeautifulSoup object list