}
for (String family : families) {
writer.deleteFamily(entityId, family, timestamp);
}
for (KijiColumnName column : groupColumns) {
writer.deleteColumn(entityId, column.getFamily(), column.getQualifier(), timestamp);
}
break;
}
case ALL: {
if (!mayProceed("Are you sure you want to delete columns %s from row '%s' in table '%s'?",