How to convert ODBC.API.SQLGUID to String?

Is there a way to convert SQLGUID to String? Apparently there convert() does not have corresponging method.

julia> x
ODBC.API.SQLGUID(0x5715b932, 0x4bc5, 0x453c, (0x9d, 0xdb, 0x04, 0xe9, 0x2f, 0x4b, 0x69, 0x87))

julia> convert(String, x)
ERROR: MethodError: Cannot convert an object of type ODBC.API.SQLGUID to an object of type String

Coincidentally I’m just about done with a complete rewrite of the ODBC.jl package; on current master (] add ODBC#master), you get back a plain UUID object, which you can use as a proper uuid object, or convert to a string like string(x).