wherePolygonContains method
Add a constraint to the query that requires a particular key's coordinates that contains a ParseGeoPoints
Implementation
void wherePolygonContains(String key, ParseGeoPoint point) {
Map<String, ParseGeoPoint> dictionary = Map();
dictionary.putIfAbsent("\$point", () => point);
_addCondition(key, "\$geoIntersects", dictionary);
}