code: protected void configureTransformerInstance(final IClassTransformer transformerInstance,
                                                final Properties properties) throws Exception {
      if (null == transformerInstance || !(transformerInstance instanceof ClassTransformer)) {
        return;
      }
      ((ClassTransformer)transformerInstance).configure(properties);
    }
docs: Configure the passed {@link ClassTransformer} instance using the passed {@link Properties}.
  
  @param transformerInstance maybe {@code null}
  @param properties maybe {@code null} or empty
  
  @throws Exception by {@link ClassTransformer#configure(Properties)}