code: def init_app(self, app):
          
          if self.entry_point_group:
              eps = sorted(pkg_resources.iter_entry_points(
                  self.entry_point_group), key=attrgetter('name'))
              for ep in eps:
                  app.logger.debug("Loading config for entry point {}".format(
                      ep))
                  app.config.from_object(ep.load())
docs: Initialize Flask application.