Javadoc
Returns an array of int[]s each one representing a contiguous set of
indices in the tree model events child indices - each of which can be
fired as a single TableModelEvent. The length of the return value is
the number of TableModelEvents required to represent this TreeModelEvent.
If reverseOrder is true (needed for remove events, where the last indices
must be removed first or the indices of later removals will be changed),
the returned int[]s will be sorted in reverse order, and the order in
which they are returned will also be from highest to lowest.