#fixed code
                                @Test
    public void shouldReturnTheResourceForAClass() throws IOException {
        PropertiesManagerForTest manager = 
                new PropertiesManagerForTest(SampleConfig.class, new Properties(), scheduler, expander, loaders);

        manager.load();
        
        verify(loaders, times(1)).findLoader(any(URL.class));
        verify(loaders, times(1)).findLoader(argThat(urlMatches(
                "org/aeonbits/owner/loadstrategies/DefaultLoadStrategyTest$SampleConfig.properties")));
    }
#vulnerable code 
                                @Test
    public void shouldReturnTheResourceForAClass() throws IOException {
        PropertiesManagerForTest manager = new PropertiesManagerForTest(SampleConfig.class, new Properties(),
                scheduler, expander);

        assertEquals(1, manager.getUrls().size());
        for(URL url : manager.getUrls()) 
            assertTrue(url.getPath().contains("org/aeonbits/owner/loadstrategies/DefaultLoadStrategyTest$SampleConfig"));
    } 
                            #location 6 
                            #vulnerability type NULL_DEREFERENCE