src/main/java/com/googlecode/javaewah/IteratorAggregation.java
protected static void dischargeAsEmpty(final BitmapStorage container,
                                           final IteratingRLW i) {
        while (i.size() > 0) {
            container.addStreamOfEmptyWords(false, i.size());
            i.next();
        }
    }
protected static void dischargeAsEmpty(final BitmapStorage container,
                                           final IteratingRLW i) {
        while (i.size() > 0) {
            container.addStreamOfEmptyWords(false, i.size());
            i.next();
        }
    }
Write out the content of the iterator, but as if it were all zeros.

@param container where we write
@param i         the iterator