Laravel\Lumen\Application::registerBroadcastingBindings PHP Method

    protected function registerBroadcastingBindings()
    {
        $this->singleton('Illuminate\\Contracts\\Broadcasting\\Broadcaster', function () {
            $this->configure('broadcasting');
            $this->register('Illuminate\\Broadcasting\\BroadcastServiceProvider');
            return $this->make('Illuminate\\Contracts\\Broadcasting\\Broadcaster');
        });
    }