code: @Override
      public SwapEnvironmentCNAMEsResult swapEnvironmentCNAMEs(SwapEnvironmentCNAMEsRequest request) {
          request = beforeClientExecution(request);
          return executeSwapEnvironmentCNAMEs(request);
      }
docs: <p>
  Swaps the CNAMEs of two environments.
  </p>
  
  @param swapEnvironmentCNAMEsRequest
  Swaps the CNAMEs of two environments.
  @return Result of the SwapEnvironmentCNAMEs operation returned by the service.
  @sample AWSElasticBeanstalk.SwapEnvironmentCNAMEs
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/elasticbeanstalk-2010-12-01/SwapEnvironmentCNAMEs"
  target="_top">AWS API Documentation</a>