code: @Override
      public DescribeMaintenanceWindowExecutionsResult describeMaintenanceWindowExecutions(DescribeMaintenanceWindowExecutionsRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeMaintenanceWindowExecutions(request);
      }
docs: <p>
  Lists the executions of a Maintenance Window. This includes information about when the Maintenance Window was
  scheduled to be active, and information about tasks registered and run with the Maintenance Window.
  </p>
  
  @param describeMaintenanceWindowExecutionsRequest
  @return Result of the DescribeMaintenanceWindowExecutions operation returned by the service.
  @throws InternalServerErrorException
  An error occurred on the server side.
  @sample AWSSimpleSystemsManagement.DescribeMaintenanceWindowExecutions
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ssm-2014-11-06/DescribeMaintenanceWindowExecutions"
  target="_top">AWS API Documentation</a>