code: def get_translated_items(fapi, file_uri, use_cache, cache_dir=None):
      
      items = None
      cache_file = os.path.join(cache_dir, sha1(file_uri)) if use_cache else None
      if use_cache and os.path.exists(cache_file):
          print("Using cache file %s for translated items for: %s" % (cache_file, file_uri))
          items = json.loads(read_from_file(cache_file))
      if not items:
          print("Downloading %s from smartling" % file_uri)
          (response, code) = fapi.last_modified(file_uri)
          items = response.data.items
          if cache_file:
              print("Caching %s to %s" % (file_uri, cache_file))
              write_to_file(cache_file, json.dumps(items))
      return items
docs: Returns the last modified from smarterling