checkPublicSuffix("jp", null)
    checkPublicSuffix("test.jp", "test.jp")
    checkPublicSuffix("www.test.jp", "test.jp")
    checkPublicSuffix("ac.jp", null)
    checkPublicSuffix("test.ac.jp", "test.ac.jp")
    checkPublicSuffix("www.test.ac.jp", "test.ac.jp")
    checkPublicSuffix("kyoto.jp", null)
    checkPublicSuffix("test.kyoto.jp", "test.kyoto.jp")
    checkPublicSuffix("ide.kyoto.jp", null)

abeno.osaka.jp abiko.chiba.jp abira.hokkaido.jp abkhazia.su able abo.pa abogado abr.it abruzzo.it abu.yamaguchi.jp abudhabi ac ac.ae ac.at ac.be ac.ci ac.cn ac.cr ac.cy ac.fj ac.gn ac.gov.br ac.id ac.il ac.im ac.in ac.ir ac.jp ac.ke ac.kr ac.leg.br ac.lk ac.ls ac.ma ac.me ac.mu ac.mw ac.mz ac.ni ac.nz ac.pa ac.pr ac.rs ac.ru ac.rw ac.se ac.sz ac.th ac.tj ac.tz ac.ug ac.uk ac.vn ac.za ac.zm ac.zw aca.pro academia.bo academy academy.museum accenture accesscam.org accident-investigation.aero accident-prevention.aero...

      createUndirectedGraph("ba", "ad", "be", "ac", "ec", "cf");

  /**
   * A diamond shaped directed graph (arrows going down):
   *
   * <pre>{@code
   *   a
   *  / \
   * b   c
   *  \ /
   *   d
   * }</pre>
   */
  private static final SuccessorsFunction<Character> DIAMOND_GRAPH =
      createDirectedGraph("ab", "ac", "bd", "cd");

  /**

      createUndirectedGraph("ba", "ad", "be", "ac", "ec", "cf");

  /**
   * A diamond shaped directed graph (arrows going down):
   *
   * <pre>{@code
   *   a
   *  / \
   * b   c
   *  \ /
   *   d
   * }</pre>
   */
  private static final SuccessorsFunction<Character> DIAMOND_GRAPH =
      createDirectedGraph("ab", "ac", "bd", "cd");

  /**

          "uomi-online.kir.jp",
          "jprs.co.jp",
          "site.quick.jp",
          "site.tenki.jp",
          "site.or.jp",
          "site.gr.jp",
          "site.ne.jp",
          "site.ac.jp",
          "site.ad.jp",
          "site.ed.jp",
          "site.geo.jp",
          "site.go.jp",
          "site.lg.jp",
          "1.fm",
          "site.cc",
          "site.ee",

        defaultSettings.put("onelogin.saml2.security.want_nameid_encrypted", "false");
        defaultSettings.put("onelogin.saml2.security.requested_authncontext", "urn:oasis:names:tc:SAML:2.0:ac:classes:Password");
        defaultSettings.put("onelogin.saml2.security.onelogin.saml2.security.requested_authncontextcomparison", "exact");
        defaultSettings.put("onelogin.saml2.security.want_xml_validation", "true");

          "uomi-online.kir.jp",
          "jprs.co.jp",
          "site.quick.jp",
          "site.tenki.jp",
          "site.or.jp",
          "site.gr.jp",
          "site.ne.jp",
          "site.ac.jp",
          "site.ad.jp",
          "site.ed.jp",
          "site.geo.jp",
          "site.go.jp",
          "site.lg.jp",
          "1.fm",
          "site.cc",
          "site.ee",