PayPal\Api\CurrencyConversion::setWebUrl PHP Method

    public function setWebUrl($web_url)
    {
        UrlValidator::validate($web_url, "WebUrl");
        $this->web_url = $web_url;
        return $this;
    }

 public function testUrlValidationForWebUrlDeprecated()
 {
     $obj = new CurrencyConversion();
     $obj->setWebUrl(null);
     $this->assertNull($obj->getWebUrl());
 }