Program: 30168
Project: 30168
Buggy source:
@Override public <T extends ConfigBeanProxy>NotProcessed changed(TYPE type,Class<T> tClass,T t){
  if (logger.isLoggable(Level.FINE)) {
    logger.log(Level.FINE,"String_Node_Str",new Object[]{type,tClass,t});
  }
  if (tClass == NetworkListener.class) {
    return processNetworkListener(type,(NetworkListener)t,events);
  }
 else   if (tClass == Http.class) {
    return processProtocol(type,(Protocol)t.getParent(),events);
  }
 else   if (tClass == FileCache.class) {
    return processProtocol(type,(Protocol)t.getParent().getParent(),null);
  }
 else   if (tClass == Ssl.class) {
    return processProtocol(type,(Protocol)t.getParent(),null);
  }
 else   if (tClass == Protocol.class) {
    return processProtocol(type,(Protocol)t,null);
  }
 else   if (tClass == ThreadPool.class) {
    NotProcessed notProcessed=null;
    for (    NetworkListener listener : ((ThreadPool)t).findNetworkListeners()) {
      notProcessed=processNetworkListener(type,listener,null);
    }
    return notProcessed;
  }
 else   if (tClass == Transport.class) {
    NotProcessed notProcessed=null;
    for (    NetworkListener listener : ((Transport)t).findNetworkListeners()) {
      notProcessed=processNetworkListener(type,listener,null);
    }
    return notProcessed;
  }
 else   if (tClass == VirtualServer.class && !grizzlyService.hasMapperUpdateListener()) {
    return processVirtualServer(type,(VirtualServer)t);
  }
 else   if (tClass == SystemProperty.class) {
    NetworkConfig networkConfig=config.getNetworkConfig();
    if ((networkConfig != null) && ((SystemProperty)t).getName().endsWith("String_Node_Str")) {
      for (      NetworkListener listener : networkConfig.getNetworkListeners().getNetworkListener()) {
        if (listener.getPort().equals(((SystemProperty)t).getValue())) {
          return processNetworkListener(Changed.TYPE.CHANGE,listener,events);
        }
      }
    }
    return null;
  }
  return null;
}

Fixed version (ground truth):
@Override public <T extends ConfigBeanProxy>NotProcessed changed(TYPE type,Class<T> tClass,T t){
  if (logger.isLoggable(Level.FINE)) {
    logger.log(Level.FINE,"String_Node_Str",new Object[]{type,tClass,t});
  }
  if (tClass == NetworkListener.class && t instanceof NetworkListener) {
    return processNetworkListener(type,(NetworkListener)t,events);
  }
 else   if (tClass == Http.class && t instanceof Http) {
    return processProtocol(type,(Protocol)t.getParent(),events);
  }
 else   if (tClass == FileCache.class && t instanceof FileCache) {
    return processProtocol(type,(Protocol)t.getParent().getParent(),null);
  }
 else   if (tClass == Ssl.class && t instanceof Ssl) {
    return processProtocol(type,(Protocol)t.getParent(),null);
  }
 else   if (tClass == Protocol.class && t instanceof Protocol) {
    return processProtocol(type,(Protocol)t,null);
  }
 else   if (tClass == ThreadPool.class && t instanceof ThreadPool) {
    NotProcessed notProcessed=null;
    for (    NetworkListener listener : ((ThreadPool)t).findNetworkListeners()) {
      notProcessed=processNetworkListener(type,listener,null);
    }
    return notProcessed;
  }
 else   if (tClass == Transport.class && t instanceof Transport) {
    NotProcessed notProcessed=null;
    for (    NetworkListener listener : ((Transport)t).findNetworkListeners()) {
      notProcessed=processNetworkListener(type,listener,null);
    }
    return notProcessed;
  }
 else   if (tClass == VirtualServer.class && t instanceof VirtualServer && !grizzlyService.hasMapperUpdateListener()) {
    return processVirtualServer(type,(VirtualServer)t);
  }
 else   if (tClass == SystemProperty.class && t instanceof SystemProperty) {
    NetworkConfig networkConfig=config.getNetworkConfig();
    if ((networkConfig != null) && ((SystemProperty)t).getName().endsWith("String_Node_Str")) {
      for (      NetworkListener listener : networkConfig.getNetworkListeners().getNetworkListener()) {
        if (listener.getPort().equals(((SystemProperty)t).getValue())) {
          return processNetworkListener(Changed.TYPE.CHANGE,listener,events);
        }
      }
    }
    return null;
  }
  return null;
}