code: @Override
      public StartBulkDeploymentResult startBulkDeployment(StartBulkDeploymentRequest request) {
          request = beforeClientExecution(request);
          return executeStartBulkDeployment(request);
      }
docs: Deploys multiple groups in one operation. This action starts the bulk deployment of a specified set of group
  versions. Each group version deployment will be triggered with an adaptive rate that has a fixed upper limit. We
  recommend that you include an ''X-Amzn-Client-Token'' token in every ''StartBulkDeployment'' request. These
  requests are idempotent with respect to the token and the request parameters.
  
  @param startBulkDeploymentRequest
  @return Result of the StartBulkDeployment operation returned by the service.
  @throws BadRequestException
  invalid request
  @sample AWSGreengrass.StartBulkDeployment
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/greengrass-2017-06-07/StartBulkDeployment" target="_top">AWS
  API Documentation</a>