private void setMetaData(BlockItem current, Map<Item, TaggableItem> reverseConnectivity, TaggableItem replacement) {
        copyAttributes((Item) current, (Item) replacement);
        setSignificanceAndDocumentFrequency(replacement, current);
        Connectivity c = getConnectivity(current);
        if (c != null) {
            replacement.setConnectivity(c.word, c.value);
            reverseConnectivity.put(c.word, replacement);
        }
        setConnectivity(current, reverseConnectivity, (Item) replacement);
    }
Replaces query terms with their stems

@author Mathias Lidal
@author bratseth
@author Steinar Knutsen
container-search/src/main/java/com/yahoo/prelude/querytransform/StemmingSearcher.java