#vulnerable code 
                             @Test
	public void parseXml() {
		ICalParameters params = new ICalParameters();

		Element element = xcalPropertyElement(marshaller, "<integer>5</integer>");
		Result<IntegerProperty> result = marshaller.parseXml(element, params);

		IntegerProperty prop = result.getValue();
		assertIntEquals(5, prop.getValue());
		assertWarnings(0, result.getWarnings());
	} 
                            #location 6 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                             @Test
	public void parseXml() {
		Result<IntegerProperty> result = parseXCalProperty("<integer>5</integer>", marshaller);

		IntegerProperty prop = result.getValue();
		assertIntEquals(5, prop.getValue());
		assertWarnings(0, result.getWarnings());
	}