code: def ReadContainers(self, database_link, options=None):
          
          if options is None:
              options = {}
  
          return self.QueryContainers(database_link, None, options)
docs: Reads all collections in a database.
  
          :param str database_link:
              The link to the database.
          :param dict options:
              The request options for the request.
              
          :return: Query Iterable of Collections.
          :rtype:
              query_iterable.QueryIterable