public static void checkHttpTimeoutProperty() throws NumberFormatException {
    checkNumericSystemProperty(HTTP_TIMEOUT, Range.atLeast(0));
  }
@Test
  public void testCheckHttpTimeoutProperty_okWhenUndefined() throws NumberFormatException {
    System.clearProperty(JibSystemProperties.HTTP_TIMEOUT);
    JibSystemProperties.checkHttpTimeoutProperty();
  }