whereWithinGeoBox method
Add a constraint to the query that requires a particular key's coordinates be contained within a given rectangular geographic bounding box.
Implementation
void whereWithinGeoBox(
String key, ParseGeoPoint southwest, ParseGeoPoint northeast) {
List<dynamic> array = [];
array.add(southwest);
array.add(northeast);
Map<String, List<dynamic>> dictionary = Map();
dictionary.putIfAbsent("\$box", () => array);
_addCondition(key, "\$within", dictionary);
}