output: #fixed code
                                @Test
    public void verifyValidateClusterStartupWarnsIfNoServersInCluster() {
      WlsClusterConfig wlsClusterConfig = new WlsClusterConfig("cluster1");
  
      wlsClusterConfig.validateCluster(1, null);
  
      assertThat(logRecords, containsWarning(NO_WLS_SERVER_IN_CLUSTER, "cluster1"));
    }
input: #vulnerable code 
                                @Test
    public void verifyValidateClusterStartupWarnsIfNoServersInCluster() {
      WlsClusterConfig wlsClusterConfig = new WlsClusterConfig("cluster1");
      ClusterStartup cs = new ClusterStartup().withClusterName("cluster1").withReplicas(1);
      wlsClusterConfig.validateClusterStartup(cs, null);
      assertThat(logRecords, containsWarning(NO_WLS_SERVER_IN_CLUSTER, "cluster1"));
      assertThat(logRecords, containsWarning(REPLICA_MORE_THAN_WLS_SERVERS));
    } 
                              #location 5 
                              #vulnerability type NULL_DEREFERENCE