code: public Query addRangeRefinement(String navigationName, String low, String high, boolean exclude) {
      return addRefinement(navigationName, new RefinementRange().setLow(low).setHigh(high).setExclude(exclude));
    }
docs: <code>
  Add a range refinement.  Takes a refinement name, a lower and upper bounds, and whether or not to exclude
  this refinement.
  </code>
  
  @param navigationName
  The name of the refinement
  @param low
  The low value
  @param high
  The high value
  @param exclude
  True if the results should exclude this range refinement, false otherwise