Program: 185232
Project: 185232
Buggy source:
@Override protected <T>T handleGetCapability(Class<T> capability){
  if (MultiComponent.class.isAssignableFrom(capability)) {
    return capability.cast(this);
  }
  if (Evaluator.class.isAssignableFrom(capability)) {
    Evaluator e=new Evaluator(){
      @Override public String getCode(){
        return getData().getCode();
      }
      @Override public String getDisplayName(){
        return getDisplay();
      }
      @Override public String getLanguage(){
        return getData().getLanguage();
      }
      public boolean requiresMultipleInputs(){
        return getExecutor() != null && getExecutor().requiresMultipleInputs();
      }
      private Executor getExecutor(){
        Executor e=executor.get();
        if (e == null) {
          executor.set(e=MultiProviderRegistry.getExecutor(MultiComponent.this));
        }
        return e;
      }
      private final AtomicReference<Executor> executor=new AtomicReference<Executor>();
      @Override public FeedProvider.RenderingInfo evaluate(      Map<String,List<Map<String,String>>> data,      List<FeedProvider> providers){
        Executor e=getExecutor();
        FeedProvider.RenderingInfo ri=null;
        if (e != null) {
          if (getData().isPassThrough()) {
            for (            FeedProvider fp : providers) {
              if (fp.getSubscriptionId().startsWith("String_Node_Str")) {
                if (fp.getSubscriptionId().substring(4).equals(getData().getPassThroughParameterId())) {
                  List<Map<String,String>> values=data.get("String_Node_Str" + getData().getPassThroughParameterId());
                  if (values != null) {
                    ri=fp.getRenderingInfo(values.get(values.size() - 1));
                  }
                }
              }
 else {
                if (fp.getSubscriptionId().equals(getData().getPassThroughParameterId())) {
                  List<Map<String,String>> values=data.get(getData().getPassThroughParameterId());
                  if (values != null) {
                    ri=fp.getRenderingInfo(values.get(values.size() - 1));
                  }
                }
              }
            }
          }
 else {
            ri=e.evaluate(data,providers);
            if (ri == null) {
              ri=new FeedProvider.RenderingInfo(getData().getFallThroughDisplayValue(),Color.red,"String_Node_Str",Color.red,false);
            }
          }
        }
 else {
          LoggerFactory.getLogger(MultiComponent.class).error("String_Node_Str" + getLanguage());
          ri=new FeedProvider.RenderingInfo("String_Node_Str",Color.red,"String_Node_Str",Color.red,false);
        }
        return ri;
      }
    }
;
    return capability.cast(e);
  }
  if (ModelStatePersistence.class.isAssignableFrom(capability)) {
    JAXBModelStatePersistence<MultiModelRole> persistence=new JAXBModelStatePersistence<MultiModelRole>(){
      @Override protected MultiModelRole getStateToPersist(){
        return model.get();
      }
      @Override protected void setPersistentState(      MultiModelRole modelState){
        model.set(modelState);
      }
      @Override protected Class<MultiModelRole> getJAXBClass(){
        return MultiModelRole.class;
      }
    }
;
    return capability.cast(persistence);
  }
  return super.handleGetCapability(capability);
}

Fixed version (ground truth):
@Override protected <T>T handleGetCapability(Class<T> capability){
  if (MultiComponent.class.isAssignableFrom(capability)) {
    return capability.cast(this);
  }
  if (Evaluator.class.isAssignableFrom(capability)) {
    Evaluator e=new Evaluator(){
      @Override public String getCode(){
        return getData().getCode();
      }
      @Override public String getDisplayName(){
        return getDisplay();
      }
      @Override public String getLanguage(){
        return getData().getLanguage();
      }
      public boolean requiresMultipleInputs(){
        return getExecutor() != null && getExecutor().requiresMultipleInputs();
      }
      private Executor getExecutor(){
        Executor e=executor.get();
        if (e == null) {
          executor.set(e=MultiProviderRegistry.getExecutor(MultiComponent.this));
        }
        return e;
      }
      private final AtomicReference<Executor> executor=new AtomicReference<Executor>();
      @Override public FeedProvider.RenderingInfo evaluate(      Map<String,List<Map<String,String>>> data,      List<FeedProvider> providers){
        Executor e=getExecutor();
        FeedProvider.RenderingInfo ri=null;
        if (e != null) {
          if (getData().isPassThrough()) {
            for (            FeedProvider fp : providers) {
              if (fp.getSubscriptionId().equals(getData().getPassThroughParameterId())) {
                List<Map<String,String>> values=data.get(getData().getPassThroughParameterId());
                if (values != null && !values.isEmpty()) {
                  ri=fp.getRenderingInfo(values.get(values.size() - 1));
                }
              }
            }
          }
 else {
            ri=e.evaluate(data,providers);
            if (ri == null) {
              ri=new FeedProvider.RenderingInfo(getData().getFallThroughDisplayValue(),Color.red,"String_Node_Str",Color.red,false);
            }
          }
        }
 else {
          LoggerFactory.getLogger(MultiComponent.class).error("String_Node_Str" + getLanguage());
          ri=new FeedProvider.RenderingInfo("String_Node_Str",Color.red,"String_Node_Str",Color.red,false);
        }
        return ri;
      }
    }
;
    return capability.cast(e);
  }
  if (ModelStatePersistence.class.isAssignableFrom(capability)) {
    JAXBModelStatePersistence<MultiModelRole> persistence=new JAXBModelStatePersistence<MultiModelRole>(){
      @Override protected MultiModelRole getStateToPersist(){
        return model.get();
      }
      @Override protected void setPersistentState(      MultiModelRole modelState){
        model.set(modelState);
      }
      @Override protected Class<MultiModelRole> getJAXBClass(){
        return MultiModelRole.class;
      }
    }
;
    return capability.cast(persistence);
  }
  return super.handleGetCapability(capability);
}