return permissions(false, filePermissions -> filePermissions.unix(unixNumericOrSymbolic));
    }

    @Override
    public ConfigurableFilePermissions permissions(int unixNumeric) {
        return permissions(false, filePermissions -> filePermissions.unix(unixNumeric));
    }

    @Override
    public Provider<ConfigurableFilePermissions> permissions(Provider<String> permissions) {

     * (i.e. a number between 0 and 7; see {@link ConfigurableFilePermissions#unix(String)} for details).
     */
    void unix(int unixNumeric);

     * because the Unix style permission input completely overwrites the default values, so
     * the distinction doesn't matter.
     *
     * @since 8.3
     */
    ConfigurableFilePermissions permissions(int unixNumeric);

    /**
     * {@link Provider} based version of {@link #permissions(String)},  to facilitate wiring into property chains.
     *
     * @since 8.3
     */

     * </pre>
     */
    void unix(String unixNumericOrSymbolic);

    /**
     * Sets Unix style numeric permissions. See {@link #unix(String)} for details.
     */
    void unix(int unixNumeric);