code: @Override
      public ListPlatformVersionsResult listPlatformVersions(ListPlatformVersionsRequest request) {
          request = beforeClientExecution(request);
          return executeListPlatformVersions(request);
      }
docs: <p>
  Lists the available platforms.
  </p>
  
  @param listPlatformVersionsRequest
  @return Result of the ListPlatformVersions operation returned by the service.
  @throws InsufficientPrivilegesException
  The specified account does not have sufficient privileges for one or more AWS services.
  @throws ElasticBeanstalkServiceException
  A generic service exception has occurred.
  @sample AWSElasticBeanstalk.ListPlatformVersions
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/elasticbeanstalk-2010-12-01/ListPlatformVersions"
  target="_top">AWS API Documentation</a>