code: def add_access_list(self, accesslist, rank=None):
          
          self.conditions.append(
              dict(access_list_ref=accesslist.href,
                   type='element',
                   rank=rank))
docs: Add an access list to the match condition. Valid
          access list types are IPAccessList (v4 and v6),
          IPPrefixList (v4 and v6), AS Path, CommunityAccessList,
          ExtendedCommunityAccessList.