public RuleAction withCaptcha(CaptchaAction captcha) {
        setCaptcha(captcha);
        return this;
    }
<p>
Instructs WAF to run a <code>CAPTCHA</code> check against the web request.
</p>

@param captcha
       Instructs WAF to run a <code>CAPTCHA</code> check against the web request.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-wafv2/src/main/java/com/amazonaws/services/wafv2/model/RuleAction.java