@Override
  public String toString() {
    return "{"
        + sourceFile
        + ","
        + extractionPath
        + ","
        + permissions
        + ","
        + modificationTime
        + ","
        + ownership
        + "}";
  }
@Test
  public void testToString() {
    Assert.assertEquals(
        "{a" + File.separator + "path,/an/absolute/unix/path,333,1970-01-01T00:00:00Z,0:0}",
        new FileEntry(
                Paths.get("a/path"),
                AbsoluteUnixPath.get("/an/absolute/unix/path"),
                FilePermissions.fromOctalString("333"),
                Instant.EPOCH,
                "0:0")
            .toString());
  }