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public interface Contents {
    int value();
}
public interface Destination {
    String readLabel();
}
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    private class Content implements Contents {
        private int i = 11;
        public int value() {
            return i;
        }
    }
    protected class GDestination implements Destination {
        private String label;
        private GDestination(String whereTo) {
            label = whereTo;
        }
        public String readLabel() {
            return label;
        }
    }
    public Destination dest(String s) {
        return new GDestination(s);
    }
    public Contents cont() {
        return new Content();
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