Program: 28270
Project: 28270
Buggy source:
@Override public void execute(AdminCommandContext context){
  report=context.getActionReport();
  ActionReport.MessagePart part=report.getTopMessagePart();
  boolean isCluster=tgt.isCluster(list_target);
  LbConfigs lbconfigs=domain.getExtensionByType(LbConfigs.class);
  if (lbconfigs == null) {
    logger.fine(localStrings.getLocalString("String_Node_Str","String_Node_Str"));
    return;
  }
  List<LbConfig> lbconfigsList=lbconfigs.getLbConfig();
  if (lbconfigsList.size() == 0) {
    logger.fine(localStrings.getLocalString("String_Node_Str","String_Node_Str"));
    return;
  }
  if (list_target == null) {
    for (    LbConfig lbc : lbconfigsList) {
      ActionReport.MessagePart childPart=part.addChild();
      childPart.setMessage(lbc.getName());
    }
  }
 else {
    if (isCluster) {
      for (      LbConfig lbc : lbconfigsList) {
        List<ClusterRef> refs=lbc.getRefs(ClusterRef.class);
        for (        ClusterRef cRef : refs) {
          if (cRef.getRef().equals(list_target)) {
            ActionReport.MessagePart childPart=part.addChild();
            childPart.setMessage(lbc.getName());
          }
        }
      }
    }
 else     if (domain.isServer(list_target)) {
      for (      LbConfig lbc : lbconfigsList) {
        List<ServerRef> refs=lbc.getRefs(ServerRef.class);
        for (        ServerRef sRef : refs) {
          if (sRef.getRef().equals(list_target)) {
            ActionReport.MessagePart childPart=part.addChild();
            childPart.setMessage(lbc.getName());
          }
        }
      }
    }
 else {
      LbConfig lbConfig=lbconfigs.getLbConfig(list_target);
      if (lbConfig != null) {
        List<ClusterRef> cRefs=lbConfig.getRefs(ClusterRef.class);
        for (        ClusterRef ref : cRefs) {
          String s=localStrings.getLocalString("String_Node_Str","String_Node_Str");
          ActionReport.MessagePart childPart=part.addChild();
          childPart.setMessage(s + ref.getRef());
        }
        List<ServerRef> sRefs=lbConfig.getRefs(ServerRef.class);
        for (        ServerRef ref : sRefs) {
          String s=localStrings.getLocalString("String_Node_Str","String_Node_Str");
          ActionReport.MessagePart childPart=part.addChild();
          childPart.setMessage(s + ref.getRef());
        }
      }
    }
  }
  report.setActionExitCode(ActionReport.ExitCode.SUCCESS);
}

Fixed version (ground truth):
@Override public void execute(AdminCommandContext context){
  report=context.getActionReport();
  ActionReport.MessagePart part=report.getTopMessagePart();
  boolean isCluster=tgt.isCluster(list_target);
  LbConfigs lbconfigs=domain.getExtensionByType(LbConfigs.class);
  if (lbconfigs == null) {
    if (logger.isLoggable(Level.FINE)) {
      logger.fine(localStrings.getLocalString("String_Node_Str","String_Node_Str"));
    }
    return;
  }
  List<LbConfig> lbconfigsList=lbconfigs.getLbConfig();
  if (lbconfigsList.size() == 0) {
    logger.fine(localStrings.getLocalString("String_Node_Str","String_Node_Str"));
    return;
  }
  if (list_target == null) {
    for (    LbConfig lbc : lbconfigsList) {
      ActionReport.MessagePart childPart=part.addChild();
      childPart.setMessage(lbc.getName());
    }
  }
 else {
    if (isCluster) {
      for (      LbConfig lbc : lbconfigsList) {
        List<ClusterRef> refs=lbc.getRefs(ClusterRef.class);
        for (        ClusterRef cRef : refs) {
          if (cRef.getRef().equals(list_target)) {
            ActionReport.MessagePart childPart=part.addChild();
            childPart.setMessage(lbc.getName());
          }
        }
      }
    }
 else     if (domain.isServer(list_target)) {
      for (      LbConfig lbc : lbconfigsList) {
        List<ServerRef> refs=lbc.getRefs(ServerRef.class);
        for (        ServerRef sRef : refs) {
          if (sRef.getRef().equals(list_target)) {
            ActionReport.MessagePart childPart=part.addChild();
            childPart.setMessage(lbc.getName());
          }
        }
      }
    }
 else {
      LbConfig lbConfig=lbconfigs.getLbConfig(list_target);
      if (lbConfig != null) {
        List<ClusterRef> cRefs=lbConfig.getRefs(ClusterRef.class);
        for (        ClusterRef ref : cRefs) {
          String s=localStrings.getLocalString("String_Node_Str","String_Node_Str");
          ActionReport.MessagePart childPart=part.addChild();
          childPart.setMessage(s + ref.getRef());
        }
        List<ServerRef> sRefs=lbConfig.getRefs(ServerRef.class);
        for (        ServerRef ref : sRefs) {
          String s=localStrings.getLocalString("String_Node_Str","String_Node_Str");
          ActionReport.MessagePart childPart=part.addChild();
          childPart.setMessage(s + ref.getRef());
        }
      }
    }
  }
  report.setActionExitCode(ActionReport.ExitCode.SUCCESS);
}