Generic types fail to resolve on nested interfaces

public class Dto {
}

public interface Validator<T extends Object> {
	boolean validate(T obj);
}

public interface Getter<T extends Object> {
	T get();
}

public interface Setter<T extends Object> extends Validator<T> {
	void set(T obj);
}

public interface HelloService extends Getter<Dto>, Setter<Dto> {
}

get: [ ]
set: [Dto]
validate: [T]

get: [ ]
set: [Dto]
validate: [Dto]