#vulnerable code 
                                @Test
    public void testRecordLimit() throws Exception {
        List<String> dataSource = Arrays.asList("foo", "bar", "baz");

        JobReport jobReport = aNewJob()
                .reader(new IterableRecordReader(dataSource))
                .limit(2)
                .processor(new RecordCollector())
                .call();

        assertThat(jobReport.getMetrics().getTotalCount()).isEqualTo(2);
        assertThat(jobReport.getMetrics().getSuccessCount()).isEqualTo(2);

        List<GenericRecord> records = (List<GenericRecord>) jobReport.getResult();

        assertThat(records).isNotNull().hasSize(2);
        assertThat(records.get(0).getPayload()).isNotNull().isEqualTo("foo");
        assertThat(records.get(1).getPayload()).isNotNull().isEqualTo("bar");

    } 
                            #location 17 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                @Test
    public void testRecordLimit() throws Exception {
        List<String> dataSource = Arrays.asList("foo", "bar", "baz");

        JobReport jobReport = aNewJob()
                .reader(new IterableRecordReader(dataSource))
                .limit(2)
                .processor(new RecordCollector())
                .call();

        assertThat(jobReport.getMetrics().getTotalCount()).isEqualTo(2);
        assertThat(jobReport.getMetrics().getSuccessCount()).isEqualTo(2);

        List<GenericRecord> records = (List<GenericRecord>) jobReport.getResult();

        assertThat(records).extracting("payload").containsExactly("foo", "bar");
    }