How does it handle de-serializing to structs with interface members? With encoding/json and ffjson, I had to write some code to handle that myself and add a typ

How does it handle de-serializing to structs with interface members? With encoding/json and ffjson, I had to write some code to handle that myself and add a type-tag member to my struct, which wasn't a deal-breaker, but if I could avoid that, I would like that very much.