def entry = new ZipArchiveEntry(testFile.name)
            entry.setTime(lmd.getTime())
            zipStream.putArchiveEntry(entry)
            zipStream << bos.toByteArray()
            zipStream.closeArchiveEntry()
            zipStream.finish()
        } finally {
            IoActions.closeQuietly(zipStream)
        }
    }

    protected boolean isJarFile(TestFile testFile) {