docs: def swagger_schema(self, request):
          """Render API Schema."""
          if self.parent is None:
              return {}
  
          spec = APISpec(
              self.parent.name, self.parent.cfg.get('VERSION', ''),
              plugins=['apispec.ext.marshmallow'], basePatch=self.prefix
          )
  
          for paths, handler in self.handlers.items():
              spec.add_tag({
                  'name': handler.name,
                  'description': utils.dedent(handler.__doc__ or ''),
              })
              for path in paths:
                  operations = {}
                  for http_method in handler.methods:
                      method = getattr(handler, http_method.lower())
                      operation = OrderedDict({
                          'tags': [handler.name],
                          'summary': method.__doc__,
                          'produces': ['application/json'],
                          'responses': {200: {'schema': {'$ref': {'#/definitions/' + handler.name}}}}
                      })
                      operation.update(utils.load_yaml_from_docstring(method.__doc__) or {})
                      operations[http_method.lower()] = operation
  
                  spec.add_path(self.prefix + path, operations=operations)
  
              if getattr(handler, 'Schema', None):
                  kwargs = {}
                  if getattr(handler.meta, 'model', None):
                      kwargs['description'] = utils.dedent(handler.meta.model.__doc__ or '')
                  spec.definition(handler.name, schema=handler.Schema, **kwargs)
  
          return deepcopy(spec.to_dict())