namespace pop
{
    using Object      = System.Object;
    using String      = System.String;
    public interface Pop
    {
        bool   Add(Person pPerson);
        bool   Remove(String pName);
        Person Get(String pName);
        Person GetFirst();
        Person Next();
        int    Size {get;}
        bool   Equals(Object pObject);
        int    GetHashCode();
        String ToString();
    }
}