@defaultMessage Convert to URI
java.net.URL#getPath()
java.net.URL#getFile()

java.io.File#delete() @ use Files.delete for real exception, IOUtils.deleteFilesIgnoringExceptions if you dont care

# temporary situation, until we upgrade with LUCENE-6051 fix 
# (at which point forbidden apis will fail and we remove this section)
@defaultMessage Use FileSystemUtils methods for now to workaround LUCENE-6051