public function providers()
    {
        return collect($this->getManifest())->flatMap(function ($configuration) {
            return (array) ($configuration['providers'] ? $configuration['providers'] : []);
        })->filter()->all();
    }
public function providers()
    {
        return collect($this->getManifest())->flatMap(function ($configuration) {
            return (array) ($configuration['providers'] ? $configuration['providers'] : []);
        })->filter()->all();
    }
public function providers ( ) { return collect ( $ this -> getManifest ( ) ) -> flatMap ( function ( $ configuration ) { return ( array ) ( $ configuration [ 'providers' ] ? $ configuration [ 'providers' ] : [ ] ) ; } ) -> filter ( ) -> all ( ) ; }
Get all of the service provider class names for all packages.

@return array
Get all of the service provider class names for all packages .