Not able to add nested list of object

[KartikGavhale]

i have a object say class A{ int pro; String description; List<B> bs; C c; } class B{ String name; int id; } class C{ int id; String reference; }

i was not able to make the floor db for these, i tried using the TypeConverters but still showing error as Column type is not supported for List<B> and C are Any suggestion wound be appreciated.