code: def add_client(self, client_id, client_secret, redirect_uris,
                     authorized_grants=None, authorized_response_types=None):
          
          self.clients[client_id] = Client(
              identifier=client_id,
              secret=client_secret,
              redirect_uris=redirect_uris,
              authorized_grants=authorized_grants,
              authorized_response_types=authorized_response_types)
  
          return True
docs: Add a client app.
  
          :param client_id: Identifier of the client app.
          :param client_secret: Secret the client app uses for authentication
                                against the OAuth 2.0 provider.
          :param redirect_uris: A ``list`` of URIs to redirect to.