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import java.io.Serializable;
import java.util.AbstractMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.locks.ReentrantLock;
@SuppressWarnings("") // Just check for crashes.
public class Bug2 {
public <C, D> ConcurrentMap<C, D> makeMap() {
return Bug2.create(this);
}
static <A, B> MyMap<A, B, ? extends MyMap.MyEntry<A, B, ?>, ?> create(Bug2 builder) {
throw new RuntimeException();
}
abstract static class MyMap<
E, F, G extends MyMap.MyEntry<E, F, G>, H extends MyMap.MyLock<E, F, G, H>>
extends AbstractMap<E, F> implements ConcurrentMap<E, F>, Serializable {
interface MyEntry<I, J, K extends MyEntry<I, J, K>> {}
abstract static class MyLock<L, M, N extends MyEntry<L, M, N>, O extends MyLock<L, M, N, O>>
extends ReentrantLock {}
}
}
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