@Override
      public void process(boolean isAdded, int objectId) throws IOException {
        writer.stepIn(IonType.STRUCT);
        writer.setFieldName(OBJECT_ID_FIELD);
        writer.writeInt(objectId);
        if (isAdded) {
          writeStrings(writer, "args", config.getAnnotationProcessorArguments());
          writeStrings(writer, "paths", config.getAnnotationProcessorPath());
          writeString(writer, "output", config.getProcessorOutput());
          writeBoolean(writer, "isTestSources", config.isTestSources());
        }
        writer.stepOut();
      }
@Override
      public void process(boolean isAdded, int objectId)