public function installed()
    {
        try {
            return $this->json($this->manager()->getAllPackages());
        } catch (\Exception $e) {
            return $this->getJsonException($e);
        }
    }
public function installed()
    {
        try {
            return $this->json($this->manager()->getAllPackages());
        } catch (\Exception $e) {
            return $this->getJsonException($e);
        }
    }
public function installed ( ) { try { return $ this -> json ( $ this -> manager ( ) -> getAllPackages ( ) ) ; } catch ( \ Exception $ e ) { return $ this -> getJsonException ( $ e ) ; } }
Get a list of all installed packages.

Partially equivalent to `composer show -i`

@return \Symfony\Component\HttpFoundation\JsonResponse
Get a list of all installed packages .