contains method
Implementation
bool contains(dynamic key) {
key = Parse.name(key);
return themes.keys.firstWhere((item) => Parse.name(item) == key,
orElse: () => null) !=
null;
}
bool contains(dynamic key) {
key = Parse.name(key);
return themes.keys.firstWhere((item) => Parse.name(item) == key,
orElse: () => null) !=
null;
}