pure interface of class net.sf.pizzacompiler.lang.Pair<A, B>

public class Pair<A, B>
  implements java.io.Serializable
{
    public case Pair(A fst,
                     B snd);
    public int hashCode();
    public boolean equals(Object other);
    public String toString();
    public A fst;
    public B snd;
}