public class Redwood extends Tree {
public static void main(String[] args) {
new Redwood().go();
}
void go() {
go2(new Tree(), new Redwood());
go2((Redwood) new Tree(), new Redwood());
}
void go2(Tree t1, Redwood r1) {
Redwood r2 = (Redwood)t1;
Tree t2 = (Tree)r1;
}
}
class Tree { }
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}
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go2((Redwood) new
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