text: from .adapter import CacheControlAdapter
  from .cache import DictCache
  
  
  def CacheControl(sess, cache=None, cache_etags=True, serializer=None):
      cache = cache or DictCache()
      adapter = CacheControlAdapter(
          cache,
          cache_etags=cache_etags,
          serializer=serializer,
      )
      sess.mount('http://', adapter)
      sess.mount('https://', adapter)
  
      return sess
  