Fileset containing JUST directory names 1 level deep

[Ross Cormier]

I would like to retrieve ONLY the directory names one level down from the
current directory and NO lower.

For example.  Consider the following directory structure.
basedir
  |--dir1
  |--dir2
      |--not_this_dir1
          |--not_this_dir2
  |--dir3

I would like the fileset to contain (dir1, dir2, dir3).

Is this possible?

Thanks in advance,
Ross