code: def init_config(self, app):
          
          # Set up API endpoints for records.
          for k in dir(config):
              if k.startswith('RECORDS_REST_'):
                  app.config.setdefault(k, getattr(config, k))
  
          # Resolve the Elasticsearch error handlers
          handlers = app.config['RECORDS_REST_ELASTICSEARCH_ERROR_HANDLERS']
          for k, v in handlers.items():
              handlers[k] = obj_or_import_string(v)
docs: Initialize configuration.