public void expectElementExistOrNot(boolean expectExist, final String xpath, int timeout) {
		if (expectExist) {
			try {
				new Wait() {
					public boolean until() {
						return isElementPresent(xpath, -1);
					}
				}.wait("Failed to find element " + xpath, timeout);
			} catch (Exception e) {
				e.printStackTrace();
				handleFailure("Failed to find element " + xpath);
			}
			logger.info("Found desired element " + xpath);
		} else {
			if (isElementPresent(xpath, timeout)) {
				handleFailure("Found undesired element " + xpath);
			} else {
				logger.info("Not found undesired element " + xpath);
			}
		}
	}