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