DXN objectid (@objectid "...", Jan, 2026-10-20): BSON's 12-byte
ObjectId, built in like uuid -- readable in text, its raw bytes in
.dxnb. The value holds the bytes; the 24 hex digits exist only at
the text boundary.
iex> {:ok, id} = Dextrin.ObjectId.parse("507F1F77BCF86CD799439011")
iex> Dextrin.ObjectId.format(id)
"507f1f77bcf86cd799439011"
Summary
Functions
The 24 lowercase hex digits.
An ObjectId from its 12 raw bytes.
Parses 24 hex digits, either case.