visitedSymbolicLinks.add(details.getFile());
                final TarArchiveEntry entry = new TarArchiveEntry(details.getRelativePath().getPathString(), TarConstants.LF_SYMLINK);
                entry.setModTime(getModTime(details));
                entry.setMode(UnixStat.LINK_FLAG | details.getMode());
                try {
                    entry.setLinkName(Files.readSymbolicLink(details.getFile().toPath()).toString());

                }
                if (preserveFileTimestamps) {
                    assertTrue(entry.getModTime().getTime() > 0);
                } else {
                    assertThat(entry.getModTime().getTime(), equalTo(0L));
                }
                entry = tar.getNextTarEntry();
            }
            assertTrue(realFolderEntry);