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sclass MinimalChain implements Iterable {
A element;
MinimalChain next;
*() {}
*(A *element) {}
*(A *element, MinimalChain *next) {}
toString { ret str(toList()); }
ArrayList toList() {
new ArrayList l;
MinimalChain c = this;
while (c != null) {
l.add(c.element);
c = c.next;
}
ret l;
}
// TODO: optimize
public Iterator iterator() { ret toList().iterator(); }
}