Thread.currentThread().interrupt() // Retain interrupted status.
      }
    }

    check(::publicSuffixListBytes.isInitialized) {
      // May have failed with an IOException
      "Unable to load $PUBLIC_SUFFIX_RESOURCE resource from the classpath."
    }

    // Break apart the domain into UTF-8 labels, i.e. foo.bar.com turns into [foo, bar, com].