[{"_id":BinData(3,"OyQRAeK7QlWMr0E2xWapYg==")}]

db.collection.aggregate([{"$project":{"_idUUIDstr":{"$function":{"body":"function tt(s){let t=s.hex();var r=t.substr(6,2)+t.substr(4,2)+t.substr(2,2)+t.substr(0,2),u=t.substr(10,2)+t.substr(8,2),b=t.substr(14,2)+t.substr(12,2),e=t.substr(16,16);return t=r+u+b+e,t.substr(0,8)+'-'+t.substr(8,4)+'-'+t.substr(12,4)+'-'+t.substr(16,4)+'-'+t.substr(20,12)}","args":["$_id"],"lang":"js"}}}}])