#fixed code
                             @Test
	public void parseXml() {
		Result<DateTimePropertyImpl> result = parseXCalProperty("<date-time>2013-06-11T13:43:02Z</date-time>", marshaller);

		DateTimePropertyImpl prop = result.getValue();
		assertEquals(datetime, prop.getValue());
		assertWarnings(0, result.getWarnings());
	}
#vulnerable code 
                             @Test
	public void parseXml() {
		ICalParameters params = new ICalParameters();

		Element element = xcalPropertyElement(marshaller, "<date-time>2013-06-11T13:43:02Z</date-time>");
		Result<DateTimePropertyImpl> result = marshaller.parseXml(element, params);

		DateTimePropertyImpl prop = result.getValue();
		assertEquals(datetime, prop.getValue());
		assertWarnings(0, result.getWarnings());
	} 
                            #location 6 
                            #vulnerability type NULL_DEREFERENCE