docs: def ensure_indexes(self):
          """Update the indexes"""
          for collection_name in INDEXES:
              existing_indexes = self.indexes(collection_name)
              indexes = INDEXES[collection_name]
              for index in indexes:
                  index_name = index.document.get('name')
                  if index_name in existing_indexes:
                      logger.debug("Index exists: %s" % index_name)
                      self.db[collection_name].drop_index(index_name)
              logger.info("creating indexes for collection {0}: {1}".format(
                  collection_name,
                  ', '.join([index.document.get('name') for index in indexes]),
                  )
              )
              self.db[collection_name].create_indexes(indexes)