Cartalyst\Stripe\ConfigInterface::setApiVersion PHP Method

    public function setApiVersion($apiVersion);

 /**
  * Sets the Stripe API version.
  *
  * @param  string  $apiVersion
  * @return $this
  */
 public function setApiVersion($apiVersion)
 {
     $this->config->setApiVersion($apiVersion);
     return $this;
 }