code: public static base_responses enable(nitro_service client, String servicegroupname[]) throws Exception {
  		base_responses result = null;
  		if (servicegroupname != null && servicegroupname.length > 0) {
  			servicegroup enableresources[] = new servicegroup[servicegroupname.length];
  			for (int i=0;i<servicegroupname.length;i++){
  				enableresources[i] = new servicegroup();
  				enableresources[i].servicegroupname = servicegroupname[i];
  			}
  			result = perform_operation_bulk_request(client, enableresources,"enable");
  		}
  		return result;
  	}
docs: Use this API to enable servicegroup resources of given names.