code: public static <T extends Transformer<?>> TransformerBeanDescriptor<T> ofTransformer(Class<T> transformerClass) {
          return new AnnotationBasedTransformerBeanDescriptor<T>(transformerClass);
      }
docs: Creates a {@link TransformerBeanDescriptor} for a transformer class.
  
  @param <T>
  @param transformerClass
  @return