docs: def export(string, template=None, **extra):
      """
      Decorator for registering view functions and adding
      templates to it.
      """
  
      def wrapped(f):
          endpoint = (f.__module__ + "." + f.__name__)[16:]
          if template is not None:
              old_f = f
  
              def f(**kwargs):
                  rv = old_f(**kwargs)
                  if not isinstance(rv, Response):
                      rv = TemplateResponse(template, **(rv or {}))
                  return rv
  
              f.__name__ = old_f.__name__
              f.__doc__ = old_f.__doc__
          exported_views[endpoint] = (f, string, extra)
          return f
  
      return wrapped