modules/jooby-apitool/src/main/java/org/jooby/apitool/RouteMethod.java
public Map<String, Object> attributes() {
    return Optional.ofNullable(attributes).orElse(ImmutableMap.of());
  }
public Map<String, Object> attributes() {
    return Optional.ofNullable(attributes).orElse(ImmutableMap.of());
  }
Route attributes, copy of {@link Route.Definition#attributes()}

@return Attributes.