if (future.isDone()) {
      return;
    }
    long timeoutSeconds = timeoutSeconds();
    long deadline = System.nanoTime() + SECONDS.toNanos(timeoutSeconds);
    do {
      System.runFinalization();
      if (future.isDone()) {
        return;
      }
      System.gc();
      try {
        future.get(1L, SECONDS);
        return;
      } catch (CancellationException | ExecutionException ok) {

	MSR	R6, AMEVTYPER02_EL0                              // ERROR "system register is not writable"
	MSR	R6, AMEVTYPER03_EL0                              // ERROR "system register is not writable"
	MSR	R6, AMEVTYPER04_EL0                              // ERROR "system register is not writable"
	MSR	R6, AMEVTYPER05_EL0                              // ERROR "system register is not writable"

     */
    @Nonnull
    Map<String, String> userProperties();

    /**
     * Returns a map of system properties for the Maven execution.
     * These include both Java system properties and Maven-specific system properties.
     *
     * @return an unmodifiable map of system properties
     */
    @Nonnull
    Map<String, String> systemProperties();

    /**

    public void test_getJavaVersion() {
        System.setProperty("java.version", "1.4.2_19");
        assertEquals(4, JvmUtil.getJavaVersion());
        System.setProperty("java.version", "1.5.0_15");
        assertEquals(5, JvmUtil.getJavaVersion());
        System.setProperty("java.version", "1.6.0_34");
        assertEquals(6, JvmUtil.getJavaVersion());
        System.setProperty("java.version", "1.7.0_25");

  override fun requestHeadersStart(call: Call) = logEvent(RequestHeadersStart(System.nanoTime(), call))

  override fun requestHeadersEnd(
    call: Call,
    request: Request,
  ) = logEvent(RequestHeadersEnd(System.nanoTime(), call, request.headers.byteCount()))

  override fun requestBodyStart(call: Call) = logEvent(RequestBodyStart(System.nanoTime(), call))

            return a;
        }
        @SuppressWarnings("unchecked")
        final T[] array = (T[]) Array.newInstance(a.getClass().getComponentType(), a.length + b.length);
        System.arraycopy(a, 0, array, 0, a.length);
        System.arraycopy(b, 0, array, a.length, b.length);
        return array;
    }

    /**
     * Returns an array that is the concatenation of two arrays.
     * <p>

    private static final String TEST_TOKEN = "test.token";

    public static String getTestToken() {
        return System.getProperty(TEST_TOKEN, DEFAULT_TEST_TOKEN);
    }

    public static String settingTestToken() {
        final String testToken = System.getProperty(TEST_TOKEN);
        if (testToken != null) {
            logger.info("Token: {}", testToken);
            return testToken;
        }

            result = len > used ? used : len;
            if (used > i && result > i) {
                System.arraycopy(pipe_buf, beg_idx, b, off, i);
                off += i;
                System.arraycopy(pipe_buf, 0, b, off, result - i);
            } else {
                System.arraycopy(pipe_buf, beg_idx, b, off, result);
            }
            used -= result;

        when(mockFile1.lastModified()).thenReturn(System.currentTimeMillis() - 3600000);
        when(mockFile1.isDirectory()).thenReturn(false);
        when(mockFile1.getAttributes()).thenReturn(0x20); // FILE_ATTRIBUTE_ARCHIVE
        when(mockFile1.createTime()).thenReturn(System.currentTimeMillis() - 7200000);
        when(mockFile1.lastAccess()).thenReturn(System.currentTimeMillis() - 1800000);

        ResourceTraversalUtil.forEach(con.getJarFile(), (ResourceHandler) (path, is) -> {
            try {
                if (count < 10) {
                    System.out.println(path);
                }
                System.out.println(path);
                assertThat(path, is(notNullValue()));
                assertThat(path, path.startsWith("junit") || path.startsWith("org/junit") || path.startsWith("org/hamcrest")