output: #fixed code
                                  @Test
      public void testGetDeclaredFields() throws Exception {
          String javaVersion = System.getProperty("java.specification.version");
          if (javaVersion.startsWith("9") || javaVersion.startsWith("10")) {
              assertThat(ReflectionUtils.getDeclaredFields(Street.class)).hasSize(22);
          } else {
              assertThat(ReflectionUtils.getDeclaredFields(Street.class)).hasSize(20);
          }
      }
input: #vulnerable code 
                                  @Test
      public void testGetDeclaredFields() throws Exception {
          if (System.getProperty("java.specification.version").startsWith("9")) {
              assertThat(ReflectionUtils.getDeclaredFields(Street.class)).hasSize(22);
          } else {
              assertThat(ReflectionUtils.getDeclaredFields(Street.class)).hasSize(20);
          }
      } 
                              #location 3 
                              #vulnerability type NULL_DEREFERENCE