* reported unless {@code ignoreEncodingErrors} is true.
     *
     * @param ignoreEncodingErrors ignore encoding errors if true
     * @return a CharSequence if available; {@code null} otherwise
     * @throws IllegalStateException if this file object was
     * opened for writing and does not support reading
     * @throws UnsupportedOperationException if this kind of
     * file object does not support character access
     * @throws IOException if an I/O error occurred
     */
    CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException;

    /**
     * Gets a Writer for this file object.
     *
     * @return a Writer
     * @throws IllegalStateException if this file object was
     * opened for reading and does not support writing
     * @throws UnsupportedOperationException if this kind of
     * file object does not support character access
     * @throws IOException if an I/O error occurred
     */
    Writer openWriter() throws IOException;

    /**
     * Gets the time this file object was last modified.  The time is
     * measured in milliseconds since the epoch (00:00:00 GMT, January
     * 1, 1970).
     *
     * @return the time this file object was last modified; or 0 if
     * the file object does not exist, if an I/O error occurred, or if
     * the operation is not supported
     */
    long getLastModified();

    /**
     * Deletes this file object.  In case of errors, returns false.
     * @return true if and only if this file object is successfully
     * deleted; false otherwise
     */
    boolean delete();

}