docs: def requires_token(self, audiences=None, allowed_roles=None):
          """
          Decorator for functions that will be protected with token authentication.
  
          Token must be provvided either through access_token parameter or Authorization
          header.
  
          See check_token() method for further details.
          """
          def requires_token_wrapper(f):
              @wraps(f)
              def decorated(*args, **kwargs):
                  try:
                      token = request.args['access_token']
                  except KeyError:
                      token = request.headers.get('Authorization', '').partition(' ')[2]
  
                  if not self._perform_verification(token, audiences, allowed_roles):
                      abort(401)
  
                  return f(*args, **kwargs)
              return decorated
          return requires_token_wrapper