Omnipay\PayPal\RestGateway::setClientId PHP Method

Get an access token by using the OAuth 2.0 client_credentials token grant type with your clientId:secret as your Basic Auth credentials.

public setClientId ( string $value ) : RestGateway
$value	string
return	RestGateway	provides a fluent interface

    public function setClientId($value)
    {
        return $this->setParameter('clientId', $value);
    }

RestGateway