code: public void assertChecked(final By checkboxBy) {
  		WebElement element = driver.findElement(checkboxBy);
  
  		Assert.assertTrue("Checkbox: " + element + " is NOT checked!",
  				element.isSelected());
  	}
docs: Verifies that the given checkbox is checked. Please not that the method
  will do a JUNIT Assert causing the test to fail.
  
  @param checkboxBy
  the method of identifying the checkbox