code: func (o *TodoListAPI) Validate() error {
  	var unregistered []string
  
  	if o.JSONConsumer == nil {
  		unregistered = append(unregistered, "JSONConsumer")
  	}
  
  	if o.JSONProducer == nil {
  		unregistered = append(unregistered, "JSONProducer")
  	}
  
  	if o.TodosAddOneHandler == nil {
  		unregistered = append(unregistered, "todos.AddOneHandler")
  	}
  
  	if o.TodosDestroyOneHandler == nil {
  		unregistered = append(unregistered, "todos.DestroyOneHandler")
  	}
  
  	if o.TodosFindTodosHandler == nil {
  		unregistered = append(unregistered, "todos.FindTodosHandler")
  	}
  
  	if o.TodosUpdateOneHandler == nil {
  		unregistered = append(unregistered, "todos.UpdateOneHandler")
  	}
  
  	if len(unregistered) > 0 {
  		return fmt.Errorf("missing registration: %s", strings.Join(unregistered, ", "))
  	}
  
  	return nil
  }
docs: // Validate validates the registrations in the TodoListAPI