public function middleware(string $key, string $group = null)
    {
        return $this->middleMan->middle($key, $group);
    }
public function middleware(string $key, string $group = null)
    {
        return $this->middleMan->middle($key, $group);
    }
public function middleware ( string $ key , string $ group = null ) { return $ this -> middleMan -> middle ( $ key , $ group ) ; }
Use an a particular middleware once at this spot using the given identifiers.

@param string $key
@param string|null $group
@return mixed
Use an a particular middleware once at this spot using the given identifiers .