code: public AVQuery<T> whereWithinGeoBox(String key, AVGeoPoint southwest, AVGeoPoint northeast) {
      conditions.whereWithinGeoBox(key, southwest, northeast);
      return this;
    }
docs: Add a constraint to the query that requires a particular key's coordinates be contained within
  a given rectangular geographic bounding box.
  
  @param key The key to be constrained.
  @param southwest The lower-left inclusive corner of the box.
  @param northeast The upper-right inclusive corner of the box.
  @return Returns the query, so you can chain this call.