code: function correctBucketRegionFromCache(req) {
      var bucket = req.params.Bucket || null;
      if (bucket) {
        var service = req.service;
        var requestRegion = req.httpRequest.region;
        var cachedRegion = service.bucketRegionCache[bucket];
        if (cachedRegion && cachedRegion !== requestRegion) {
          service.updateReqBucketRegion(req, cachedRegion);
        }
      }
    }
docs: Corrects request region if bucket's cached region is different
  
  @api private