def begin_start(group_name, service_name, custom_headers:nil)
      response = begin_start_async(group_name, service_name, custom_headers:custom_headers).value!
      nil
    end
def begin_start(group_name, service_name, custom_headers:nil)
      response = begin_start_async(group_name, service_name, custom_headers:custom_headers).value!
      nil
    end
Start service

 The services resource is the top-level resource that represents the Data
 Migration Service. This action starts the service and the service can be used
 for data migration.

 @param group_name [String] Name of the resource group
 @param service_name [String] Name of the service
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.