}

  private @Nullable PublicSuffixType getWildcardMatchType(int metadata) {
    return getType((metadata >> WILDCARD_SHIFT) & TYPE_MASK);
  }

  private @Nullable PublicSuffixType getType(int typeBits) {
    if (typeBits == 1) {
      return PublicSuffixType.REGISTRY;
    } else if (typeBits == 2) {
      return PublicSuffixType.PRIVATE;
    }
    return null;
  }

  /**

                ImmutableList.of("blogspot", "com"), PublicSuffixType.PRIVATE))
        .isEqualTo(0);
    assertThat(
            PublicSuffixPatterns.TRIE.findSuffixIndex(
                ImmutableList.of("blogspot", "com"), PublicSuffixType.REGISTRY))
        .isEqualTo(1);

    assertThat(
            PublicSuffixPatterns.TRIE.findSuffixIndex(
                ImmutableList.of("com"), PublicSuffixType.REGISTRY))
        .isEqualTo(0);

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