InternetDomainName domain = InternetDomainName.from("foo.city.yokohama.jp");
    assertTrue(domain.hasPublicSuffix());
    assertEquals("yokohama.jp", domain.publicSuffix().toString());

    // Behold the weirdness!
    assertFalse(domain.publicSuffix().isPublicSuffix());
  }

  public void testPublicSuffixMultipleUnders() {
    // PSL has both *.uk and *.sch.uk; the latter should win.

import com.google.errorprone.annotations.Immutable;
import com.google.errorprone.annotations.concurrent.LazyInit;
import com.google.thirdparty.publicsuffix.PublicSuffixPatterns;
import com.google.thirdparty.publicsuffix.PublicSuffixType;
import java.util.List;
import org.jspecify.annotations.Nullable;

/**
 * An immutable well-formed internet domain name, such as {@code com} or {@code foo.co.uk}. Only

 *  Upgrade: Explicitly depend on `kotlin-stdlib-jdk8`. This fixes a problem with dependency
    locking. That's a potential security vulnerability, tracked as [CVE-2022-24329].
 *  Upgrade: [publicsuffix.org data][public_suffix]. This powers `HttpUrl.topPrivateDomain()`.
    It's also how OkHttp knows which domains can share cookies with one another.
 *  Upgrade: [Okio 3.2.0][okio_3_2_0].


## Version 4.10.0

    val cookie = parse("http://[::1]/".toHttpUrl(), "a=b; domain=::2::2")
    assertThat(cookie!!.domain).isEqualTo("::1")
  }

  /**
   * These public suffixes were selected by inspecting the publicsuffix.org list. It's possible they
   * may change in the future. If this test begins to fail, please double check they are still
   * present in the public suffix list.
   */
  @Test fun domainIsPublicSuffix() {

import okhttp3.internal.delimiterOffset
import okhttp3.internal.http.MAX_DATE
import okhttp3.internal.http.toHttpDateString
import okhttp3.internal.indexOfControlOrNonAscii
import okhttp3.internal.publicsuffix.PublicSuffixDatabase
import okhttp3.internal.toCanonicalHost
import okhttp3.internal.trimSubstring
import okhttp3.internal.unmodifiable
import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement

/**