The UniqueAttribute is not used in the DDL

[CodingOctocat]

I found that adding UniqueAttribute does not generate the correct DDL.

My Model class has a GUID attribute [Unique] public string Guid { get; set; }, however, when I look at the database using SQLiteStudio, I find that its DDL is only Guid VARCHAR, without the UNIQUE keyword, and also that Guid is created as an index (I understand this because I looked at the source code and UniqueAttribute inherits from IndexedAttribute)

So why is UNIQUE not in the DDL?