}

    // It is not any kind of IP address; must be a domain name or invalid.

    // TODO(user): different versions of this for different factories?
    InternetDomainName domain = InternetDomainName.from(host);

    if (domain.hasPublicSuffix()) {
      return new HostSpecifier(domain.toString());
    }

    throw new IllegalArgumentException(

 *
 * @author Ben Yu
 */

@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public class PackageSanityTests extends AbstractPackageSanityTests {
  public PackageSanityTests() {
    setDefault(InternetDomainName.class, InternetDomainName.from("google.com"));
  }

import com.google.common.annotations.Beta;
import com.google.common.annotations.GwtCompatible;

/**
 * <b>Do not use this class directly. For access to public-suffix information, use {@link
 * com.google.common.net.InternetDomainName}.</b>
 *
 * <p>Specifies the type of a top-level domain definition.
 *
 * @since 23.3
 */
@Beta
@GwtCompatible
public enum PublicSuffixType {