def create_or_update(resource_group_name, job_collection_name, job_name, job, custom_headers:nil)
      response = create_or_update_async(resource_group_name, job_collection_name, job_name, job, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def create_or_update(resource_group_name, job_collection_name, job_name, job, custom_headers:nil)
      response = create_or_update_async(resource_group_name, job_collection_name, job_name, job, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
Provisions a new job or updates an existing job.

 @param resource_group_name [String] The resource group name.
 @param job_collection_name [String] The job collection name.
 @param job_name [String] The job name.
 @param job [JobDefinition] The job definition.
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [JobDefinition] operation results.