public function has(string $key): bool
    {
        try {

            $this->resolve($key);

        } catch( \Exception $exception ){

            return false;
        }

        return true;
    }
public function has(string $key): bool
    {
        try {

            $this->resolve($key);

        } catch( \Exception $exception ){

            return false;
        }

        return true;
    }
public function has ( string $ key ) : bool { try { $ this -> resolve ( $ key ) ; } catch ( \ Exception $ exception ) { return false ; } return true ; }
See if config has given key.

@param string $key
@return boolean
See if config has given key .