code: def get_primary_text(self, force_download=False):
          
          return self.client.get_primary_text(self.url(), force_download)
docs: Retrieve the primary text for this item from the server
  
          :type force_download: Boolean
          :param force_download: True to download from the server
              regardless of the cache's contents
  
          :rtype: String
          :returns: the primary text
  
          :raises: APIError if the API request is not successful