Courtesy of NWoodman via Boo IRC, where all the hip-cats hang out.
[00:34] <NWoodman> Hmmm, I think I just found a bug in Boo
[00:34] <NWoodman> import org.tmatesoft.svn.core.internal.io.dav
00:35] <NWoodman> BCE0044: 'expecting "ID", found 'internal''.
Silly compiler, there are no access level keywords in an import statement!