public Observation withSourceARN(String sourceARN) {
        setSourceARN(sourceARN);
        return this;
    }
<p>
The source resource ARN of the observation.
</p>

@param sourceARN
       The source resource ARN of the observation.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-applicationinsights/src/main/java/com/amazonaws/services/applicationinsights/model/Observation.java