public Integer getTrafficPolicyVersion() {
        return this.trafficPolicyVersion;
    }
<p>
The version of the traffic policy for which you want to list traffic policy instances. The version must be
associated with the traffic policy that is specified by <code>TrafficPolicyId</code>.
</p>

@return The version of the traffic policy for which you want to list traffic policy instances. The version must
        be associated with the traffic policy that is specified by <code>TrafficPolicyId</code>.
aws-java-sdk-route53/src/main/java/com/amazonaws/services/route53/model/ListTrafficPolicyInstancesByPolicyRequest.java