@Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        Human human = (Human) o;

        if (id != null ? !id.equals(human.id) : human.id != null) return false;
        if (name != null ? !name.equals(human.name) : human.name != null) return false;
        if (unread != null ? !unread.equals(human.unread) : human.unread != null) return false;

        return true;
    }