docs: def get_content(self, force_download=False):
          """ Retrieve the content for this Document 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 content data
  
          :raises: APIError if the API request is not successful
  
  
          """
          return self.client.get_document(self.url(), force_download)