}
    return total;
  }

  @Benchmark
  long manual(int reps) {
    long total = 0;
    for (int i = 0; i < reps; i++) {
      long start = System.nanoTime();
      // here is where you would do something
      total += System.nanoTime() - start;
    }
    return total;
  }

        String ciEnv = System.getenv(GITHUB_ACTIONS);
        if ("true".equals(ciEnv)) {
            return Optional.of(new CIInfo() {
                @Override
                public String name() {
                    return NAME;
                }

                @Override
                public boolean isVerbose() {
                    return "1".equals(System.getenv(RUNNER_DEBUG));
                }

        String ciEnv = System.getenv(TRAVIS);
        if ("true".equals(ciEnv)) {
            return Optional.of(new CIInfo() {
                @Override
                public String name() {
                    return NAME;
                }

                @Override
                public boolean isVerbose() {
                    return "true".equals(System.getenv(TRAVIS_DEBUG_MODE));
                }

        : parseJavaClassPath().toArray(new URL[0]);
  }

  /**
   * Returns the URLs in the class path specified by the {@code java.class.path} {@linkplain
   * System#getProperty system property}.
   */
  // TODO(b/65488446): Make this a public API.
  private static ImmutableList<URL> parseJavaClassPath() {
    ImmutableList.Builder<URL> urls = ImmutableList.builder();

      String originalName = currentThread.getName();
      currentThread.setName("Crawler " + url);
      try {
        fetch(url);
      } catch (IOException e) {
        System.out.printf("XXX: %s %s%n", url, e);
      } finally {
        currentThread.setName(originalName);
      }
    }
  }

  public void fetch(HttpUrl url) throws IOException {

     * where the property value is defined.
     */
    enum Source {
        /**
         * Maven system properties. These properties are evaluated very early during the boot process,
         * typically set by Maven itself and flagged as readOnly=true or by users via maven-system.properties files.
         * System properties are initialized before the build starts and are available throughout the entire Maven

  <url>http://maven.apache.org/maven2/</url>
  <issueManagement>
    <system>jira</system>
    <url>http://jira.codehaus.org/browse/MNG</url>
  </issueManagement>
  <ciManagement>
    <system>continuum</system>
    <notifiers>
      <notifier>
        <configuration>
          <address>******@****.***</address>
        </configuration>

                result.remove("compile");
                result.remove("system");
                result.remove("provided");
                result.remove("runtime");
            } else if ("runtime+system".equals(scope)) {
                result.remove("compile");
                result.remove("system");
                result.remove("runtime");
            } else if ("test".equals(scope)) {

  <packaging>jar</packaging>

  <name>Maven Integration Test :: it0063</name>
  <description>Test the use of a system scoped dependency to a (fake) tools.jar.</description>

  <dependencies>
    <dependency>
      <groupId>com.sun</groupId>
      <artifactId>tools</artifactId>
      <version>1.4.2</version>
      <scope>system</scope>
      <systemPath>${jre.home}/../lib/tools.jar</systemPath>
    </dependency>
  </dependencies>

 * https://github.com/xjdr/xio/blob/master/alpn-boot.gradle
 */
fun alpnBootVersion(): String? {
  val version = System.getProperty("alpn.boot.version")

  if (version != null) {
    return version
  }

  val javaVersion = System.getProperty("java.version")
  val match = "1\\.8\\.0_(\\d+)(-.*)?".toRegex().find(javaVersion) ?: return null