* @param path a list of files, if {@code null} use the default
     * path for this location
     * @see #getLocation
     * @throws IllegalArgumentException if location is an output
     * location and path does not contain exactly one element
     * @throws IOException if location is an output location and path
     * does not represent an existing directory
     */
    void setLocation(Location location, Iterable<? extends File> path)
        throws IOException;

    /**
     * Gets the path associated with the given location.
     *
     * @param location a location
     * @return a list of files or {@code null} if this location has no
     * associated path
     * @see #setLocation
     */
    Iterable<? extends File> getLocation(Location location);

}