public void setRuleName(String ruleName) {
        this.ruleName = ruleName;
    }
<p>
The name of the sampling rule. Specify a rule by either name or ARN, but not both.
</p>

@param ruleName
       The name of the sampling rule. Specify a rule by either name or ARN, but not both.
aws-java-sdk-xray/src/main/java/com/amazonaws/services/xray/model/SamplingRuleUpdate.java