code: @Override
      public ListTrafficPolicyInstancesByHostedZoneResult listTrafficPolicyInstancesByHostedZone(ListTrafficPolicyInstancesByHostedZoneRequest request) {
          request = beforeClientExecution(request);
          return executeListTrafficPolicyInstancesByHostedZone(request);
      }
docs: <p>
  Gets information about the traffic policy instances that you created in a specified hosted zone.
  </p>
  <note>
  <p>
  After you submit a <code>CreateTrafficPolicyInstance</code> or an <code>UpdateTrafficPolicyInstance</code>
  request, there's a brief delay while Amazon Route 53 creates the resource record sets that are specified in the
  traffic policy definition. For more information, see the <code>State</code> response element.
  </p>
  </note>
  <p>
  Route 53 returns a maximum of 100 items in each response. If you have a lot of traffic policy instances, you can
  use the <code>MaxItems</code> parameter to list them in groups of up to 100.
  </p>
  
  @param listTrafficPolicyInstancesByHostedZoneRequest
  A request for the traffic policy instances that you created in a specified hosted zone.
  @return Result of the ListTrafficPolicyInstancesByHostedZone operation returned by the service.
  @throws InvalidInputException
  The input is not valid.
  @throws NoSuchTrafficPolicyInstanceException
  No traffic policy instance exists with the specified ID.
  @throws NoSuchHostedZoneException
  No hosted zone exists with the ID that you specified.
  @sample AmazonRoute53.ListTrafficPolicyInstancesByHostedZone
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/route53-2013-04-01/ListTrafficPolicyInstancesByHostedZone"
  target="_top">AWS API Documentation</a>