Add updateParentAddress.

        buffer.position(wordPosition);

        buffer.put((byte)newFlags);

    }

    private static void putSInt24(final FusionDictionaryBufferInterface buffer,

            final int value) {

        final int absValue = Math.abs(value);

        buffer.put((byte)(((value < 0 ? 0x80 : 0) | (absValue >> 16)) & 0xFF));

        buffer.put((byte)((absValue >> 8) & 0xFF));

        buffer.put((byte)(absValue & 0xFF));

    }

    /**

     * Update a parent address in a CharGroup that is addressed by groupOriginAddress.

     *

     * @param buffer the buffer to write.

     * @param groupOriginAddress the address of the group.

     * @param newParentAddress the absolute address of the parent.

     * @param formatOptions file format options.

     */

    public static void updateParentAddress(final FusionDictionaryBufferInterface buffer,

            final int groupOriginAddress, final int newParentAddress,

            final FormatOptions formatOptions) {

        final int originalPosition = buffer.position();

        buffer.position(groupOriginAddress);

        if (!formatOptions.mSupportsDynamicUpdate) {

            throw new RuntimeException("this file format does not support parent addresses");

        }

        final int flags = buffer.readUnsignedByte();

        final int parentOffset = newParentAddress - groupOriginAddress;

        putSInt24(buffer, parentOffset);

        buffer.position(originalPosition);

    }

}