Fix build

     * The lookup key for a {@link Network} object passed along with a

     * {@link #ACTION_CAPTIVE_PORTAL_DETECTED} or

     * {@link #ACTION_CAPTIVE_PORTAL_SIGN_IN} intent.  This network is not the

     * default network and must be accessed using this {@link Nework} object.

     * default network and must be accessed using this {@link Network} object.

     * Retrieve with {@link android.content.Intent#getParcelableExtra(String)}.

     */

    public static final String EXTRA_NETWORK = "network";