public void setStatesArn(String statesArn) {
        this.statesArn = statesArn;
    }
<p>
The Amazon Resource Name (ARN) of the step function-based observation.
</p>

@param statesArn
       The Amazon Resource Name (ARN) of the step function-based observation.
aws-java-sdk-applicationinsights/src/main/java/com/amazonaws/services/applicationinsights/model/Observation.java