#vulnerable code 
                                @Test
    public void testTokenPattern() {
        TokenPattern pattern = TokenPattern.builder()
                .compile("(method|hidden|local) [static] <return-type> <name>(<parameters>) \\{ <body> \\}[;]")
                .build();

        LexicalPatternElement content = pattern.getPatternContent();
        Assertions.assertNotNull(content);

        TokenExtractorResult result = pattern.extract(SOURCE);
        Assertions.assertNotNull(result);
        Assertions.assertTrue(result.isMatched());
    } 
                            #location 12 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                @Test
    public void testTokenPattern() {
        TokenPattern pattern = TokenPattern.builder()
                .compile("(method|hidden|local) [static] <return-type> <name>(<parameters>) \\{ <body> \\}[;]")
                .build();

        LexicalPatternElement content = pattern.getPatternContent();
        Assertions.assertNotNull(content);

        TokenExtractorResult result = pattern.extract(SOURCE);
        Assertions.assertNotNull(result);

        //Assertions.assertTrue(result.isMatched());
    }