get_ids_by_namespace returns [] not None if empty
get_ids_by_namespace returns [] not None if empty

total-impact/total-impact-core,Impactstory/total-impact-core,Impactstory/total-impact-core,total-impact/total-impact-core,Impactstory/total-impact-core,Impactstory/total-impact-core,total-impact/total-impact-core,total-impact/total-impact-core