The FileTreeWalkerFeature is needed to walk the file tree on the
for one file tree walk. This must be a class
that implements the
FileTreeObserver interface. The observers will
be unregistered after
the file tree walk is completed.
outputDirfrom the generator to which its added.
Sets the entry point of the file tree walk. The file tree walk
starts at the given directory. E. g. it is used if you want to use
within a generator and want the statistics of the whole project.
For most cases the default value should be good enough. If you use
as an observer of this particular FileTreeWalkerFeature you should
be extra careful with this parameter. Because the
FileDeletionFeature deletes all files that are not changed after