getMap<K, V> method
Get a property's value as a Map Object, which is a mapping object of a dictionary value. Returns null if the property doesn't exists, or its value is not a dictionary.
- Parameter key: The key.
- Returns: The Map Object object or nil.
Implementation
Map<K, V> getMap<K, V>(String key) {
var _result = getValue(key);
if (_result is Map) {
return Map.unmodifiable(Map.castFrom<dynamic, dynamic, K, V>(_result));
}
return null;
}