SuggestPopularFriendPost_Summary.java

class SuggestPopularFriendPost {
    private final IAccessProfileInfo profileInfo; // Injected with constructor

    public Iterable<PostSummary> suggestedPostsFor(ProfileId profileId) {
        // Same code as before, calling `friendsOf`, `favoriteTopicsOf` and `lastPostsOf`
    }

    private Iterable<ProfileId> friendsOf(ProfileId profileId) {
        return profileInfo.friendsOf(profileId); // Rerouting to `IAccessProfileInfo`
    }

    private Set<Topic> favoriteTopicsOf(ProfileId profileId) {
        return profileInfo.favoriteTopicsOf(profileId);
    }

    private Stream<PostSummary> lastPostsOf(ProfileId profileId) {
        return stream(profileInfo.lastPostsOf(profileId));
    }
}