code: protected DocWorkUnit createWorkUnit(
              final DocumentedFeature documentedFeature,
              final ClassDoc classDoc,
              final Class<?> clazz)
      {
          return new DocWorkUnit(
                  new DefaultDocWorkUnitHandler(this),
                  documentedFeature,
                  classDoc,
                  clazz);
      }
docs: Create a work unit and handler capable of documenting the feature specified by the input arguments.
  Returns null if no appropriate handler is found or doc shouldn't be documented at all.