Program: 101904
Project: 101904
Buggy source:
@Override public <R>UnNamedObject<R> object(final Class<? extends R> aType){
  return new UnNamedObject<R>(){
    private List<Content<?>> content;
    private Converter<?,R> converter;
    private Class<?> intermediate;
    private ReflectorFactory reflector=new ReflectorFactory();
    private Class<? extends R> type=reflector.getProxy(aType);
    @Override public <I>UnNamedObject<I> via(    Class<I> anIntermediateType){
      intermediate=reflector.getProxy(anIntermediateType);
      converter=(Converter<?,R>)getConverter(intermediate,aType);
      return (UnNamedObject<I>)this;
    }
    @Override public <I>UnNamedObject<I> via(    Class<I> anIntermediateType,    Converter<I,R> aConverter){
      intermediate=reflector.getProxy(anIntermediateType);
      converter=aConverter;
      return (UnNamedObject<I>)this;
    }
    @Override public UnNamedObject<R> with(    Content<?>... aContent){
      content=new ArrayList<Content<?>>();
      for (      Content<?> _c : aContent) {
        _c.onAttach(type,reflector,JsonDocumentDefinition.this);
        content.add(_c);
      }
      return this;
    }
    @Override public void onAttach(    Class<?> aContainerType,    ReflectorFactory aReflector,    HasConverters aConverters){
      aReflector.prepare(aContainerType,Name.MISSING,type);
    }
    @Override public Name getName(){
      return Name.MISSING;
    }
    @Override @SuppressWarnings("String_Node_Str") public Builder<T> newBuilder(){
      List<Builder<?>> _nested=new ArrayList<Builder<?>>();
      for (      Content<?> _c : content)       _nested.add(_c.newBuilder());
      return new ReflectiveBuilder(Name.MISSING,type,intermediate,converter,reflector.newReflector(),_nested);
    }
  }
;
}

Fixed version (ground truth):
@Override public <R>UnNamedObject<R> object(final Class<? extends R> aType){
  return new UnNamedObject<R>(){
    private List<Content<?>> content=Collections.emptyList();
    private Converter<?,R> converter;
    private Class<?> intermediate;
    private ReflectorFactory reflector=new ReflectorFactory();
    private Class<? extends R> type=reflector.maybeConvertToProxy(aType);
    @Override public <I>UnNamedObject<I> via(    Class<I> anIntermediateType){
      intermediate=reflector.maybeConvertToProxy(anIntermediateType);
      converter=(Converter<?,R>)getConverter(intermediate,aType);
      return (UnNamedObject<I>)this;
    }
    @Override public <I>UnNamedObject<I> via(    Class<I> anIntermediateType,    Converter<I,R> aConverter){
      intermediate=reflector.maybeConvertToProxy(anIntermediateType);
      converter=aConverter;
      return (UnNamedObject<I>)this;
    }
    @Override public UnNamedObject<R> with(    Content<?>... aContent){
      content=new ArrayList<Content<?>>();
      for (      Content<?> _c : aContent) {
        _c.onAttach(type,reflector,JsonDocumentDefinition.this);
        content.add(_c);
      }
      return this;
    }
    @Override public void onAttach(    Class<?> aContainerType,    ReflectorFactory aReflector,    HasConverters aConverters){
      aReflector.prepare(aContainerType,Name.MISSING,type);
    }
    @Override public Name getName(){
      return Name.MISSING;
    }
    @Override @SuppressWarnings("String_Node_Str") public Builder<T> newBuilder(){
      List<Builder<?>> _nested=new ArrayList<Builder<?>>();
      for (      Content<?> _c : content)       _nested.add(_c.newBuilder());
      return new ReflectiveBuilder(Name.MISSING,aType,intermediate,converter,reflector.newReflector(),_nested,false);
    }
  }
;
}