Changed json.GetRecordsResponse.Record[i].boundingBox...
to json.GetRecordsResponse.Record.boundingBox...
when only one candidate exists.
Also, when not instantiated (b/c metadata contains no BB reference), boundingBox.lowerCorner/upperCorner were being treated as objects, which caused .blank() to throw an error. I changed all references to be: boundingBox.lowerCorner/upperCorner.toString().