src/ResponderServiceProvider.php
protected function registerTransformerBindings()
    {
        $this->app->singleton(TransformerResolverContract::class, function ($app) {
            return new TransformerResolver($app, $app->config['responder.fallback_transformer']);
        });

        BaseTransformer::containerResolver(function () {
            return $this->app->make(Container::class);
        });
    }
protected function registerTransformerBindings()
    {
        $this->app->singleton(TransformerResolverContract::class, function ($app) {
            return new TransformerResolver($app, $app->config['responder.fallback_transformer']);
        });

        BaseTransformer::containerResolver(function () {
            return $this->app->make(Container::class);
        });
    }
Register transformer bindings.

@return void