code: def _generate_custom_annotation_instance(self, ns, annotation):
          
          annotation_class = class_name_for_annotation_type(annotation.annotation_type, ns)
          return generate_func_call(
              annotation_class,
              kwargs=((fmt_var(k, True), self._generate_python_value(ns, v))
                      for k, v in annotation.kwargs.items())
          )
docs: Generates code to construct an instance of an annotation type object
          with parameters from the specified annotation.