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import java.util.Collection;
import java.util.List;
import java.util.stream.Stream;
class IDEA126969 {
void foo(final Stream<List<Integer>> stream) {
stream.flatMap(List::stream)
.forEach(i -> System.out.println(i.floatValue()));
stream.flatMap(Collection::stream)
.forEach(i -> System.out.println(i.floatValue()));
}
}
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