code: def import_annotation(name, opts)
        logger.debug { "Importing #{qp} annotation #{name}..." }
        # Make the annotation module class scoped by this Annotatable class.
        class_eval("module #{name}; end")
        mod = const_get(name)
        # Append the AnnotationModule methods.
        mod.extend(Annotation::Importer)
        # Build the annnotation module.
        mod.initialize_annotation(self, opts) { |pxy| create_proxy_attribute(mod, pxy) }
        mod
      end
docs: Builds a new annotation module for the given module name and options.
  
   @param [String] name the attribute module name
   @param opts (see #add_annotation)
   @return [Module] the annotation module
   @raise [AnnotationError] if there is no annotation proxy class