UuidString constant

UUID represented as a string of 36 characters, e.g. "019571b4-80e3-7516-a5c1-5f1053d23fff". For efficient storage, consider the Uuid type instead, which occupies only 16 bytes (20 bytes less). This type may still be a convenient alternative as the string type is widely supported and more human-readable. In accordance to standards, new UUIDs generated by ObjectBox use lowercase hexadecimal digits. Representing type: String