Expand Up @@ -78,7 +78,9 @@ protected ExternalResourceCachingEventSource( if (resourceIDMapper == ResourceIDMapper.resourceIdProviderMapper() && !ResourceIDProvider.class.isAssignableFrom(resourceClass)) { throw new IllegalArgumentException( "resource class is not a " + ResourceIDProvider.class.getSimpleName()); resourceClass.getName() + " is not a subclass of " + ResourceIDProvider.class.getSimpleName()); } this.resourceIDMapper = resourceIDMapper; } Expand Down