code: @Override
      public DeleteTargetGroupResult deleteTargetGroup(DeleteTargetGroupRequest request) {
          request = beforeClientExecution(request);
          return executeDeleteTargetGroup(request);
      }
docs: <p>
  Deletes the specified target group.
  </p>
  <p>
  You can delete a target group if it is not referenced by any actions. Deleting a target group also deletes any
  associated health checks.
  </p>
  
  @param deleteTargetGroupRequest
  @return Result of the DeleteTargetGroup operation returned by the service.
  @throws ResourceInUseException
  A specified resource is in use.
  @sample AmazonElasticLoadBalancing.DeleteTargetGroup
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/elasticloadbalancingv2-2015-12-01/DeleteTargetGroup"
  target="_top">AWS API Documentation</a>