code: def _build_query_url(self, page = None, verbose = False):
          
          query = []
  #        # build the filters
  #        for afilter in self.filters.keys():
  #            value = self.filters[afilter]
  #            print"filter:%s value:%s" % (afilter,value)
  #            value = urlencode(value)
  #            query_str = u"%s=%s" % (afilter, value)
          if len(self.filters) > 0:
              query.append(urlencode(self.filters))
          if self.sort:
              query_str = u"%s=%s" % (u"sort", self.sort)
              query.append(query_str)
          if self.sort_by:
              query_str = u"%s=%s" % (u"sort_by", self.sort_by)
              query.append(query_str)
          if self.per_page:
              query_str = u"%s=%s" % (u"per_page", self.per_page)
              query.append(query_str)
          if page:
              query_str = u"%s=%s" % (u"page", page)
              query.append(query_str)
          query = u"?%s" % (u"&".join(query))
          url = u"%s%s" % (self.get_list_endpoint()['href'],query)
          url = u"%s%s%s" % (self.__api__.base_url, API_BASE_PATH, url)
          msg = "_build_query_url: url:%s" % url
          log.debug(msg)
          if verbose:
              print msg
          return url
docs: builds the url to call