code: int getAttributeProcessing() {
      if (attributeProcessing == -1) {
        attributeProcessing = resolve(mode).getAttributeProcessing();
        if (modeMap != null) {
          for (Enumeration e = modeMap.values();
               e.hasMoreElements()
               && attributeProcessing != Mode.ATTRIBUTE_PROCESSING_FULL;)
            attributeProcessing = Math.max(resolve((Mode)e.nextElement()).getAttributeProcessing(),
                                           attributeProcessing);
        }
      }
      return attributeProcessing;
    }
docs: Get the maximum attribute processing value from the default mode and
  from all the modes specified in the contexts.
  @return The attribute processing value.