private void traceParsing() {
        if (queryTree.getRoot() == null || queryTree.getRoot() instanceof NullItem)
            parent.trace("Query parsing deferred", 5);
        else if (parent.getTrace().getLevel() >= 2)
            parent.trace("Query parsed to: " + parent.yqlRepresentation(), 2);
    }
Returns the query as an object structure.

@param parse if true, the query string is parsed into a query tree if it is currently null,
             if false, the query string is ignored and the query tree is initialized to
             an empty root if it's currently null.
container-search/src/main/java/com/yahoo/search/query/Model.java