{
revision.addDelta(new DeleteDelta(new Chunk(n - 1, count)));
}
else if (action == 'a')
{
revision.addDelta(new AddDelta(n, new Chunk(getTextLines(it + 1, it + 1 + count), 0, count, n - 1)));
it += count;
}
else
{
throw new InvalidFileFormatException(version.toString());