defp redirect_uri(%Plug.Conn{}, redirect_uri), do: redirect_uri
defp get_session_registration_id(%Plug.Conn{} = conn), do: get_session(conn, :registration_id)
defp redirect_uri(%Plug.Conn{}, redirect_uri), do: redirect_uri
defp get_session_registration_id(%Plug.Conn{} = conn), do: get_session(conn, :registration_id)