public TrafficSourceState withIdentifier(String identifier) {
        setIdentifier(identifier);
        return this;
    }
<p>
The unique identifier of the traffic source.
</p>

@param identifier
       The unique identifier of the traffic source.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-autoscaling/src/main/java/com/amazonaws/services/autoscaling/model/TrafficSourceState.java