public SamplingRuleUpdate withFixedRate(Double fixedRate) {
        setFixedRate(fixedRate);
        return this;
    }
<p>
The percentage of matching requests to instrument, after the reservoir is exhausted.
</p>

@param fixedRate
       The percentage of matching requests to instrument, after the reservoir is exhausted.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-xray/src/main/java/com/amazonaws/services/xray/model/SamplingRuleUpdate.java