public function stop(): DriverInterface
    {
        if ($this->process) {
            $this->process->stop();
            unset($this->process);
        }

        return $this;
    }
public function stop(): DriverInterface
    {
        if ($this->process) {
            $this->process->stop();
            unset($this->process);
        }

        return $this;
    }
public function stop ( ) : DriverInterface { if ( $ this -> process ) { $ this -> process -> stop ( ) ; unset ( $ this -> process ) ; } return $ this ; }
Ensure the driver is closed by the upstream library.

@return $this
Ensure the driver is closed by the upstream library .