init method
Implementation
@override
Future<Map<String, MatexPairMetadata>> init() async {
final json = await rootBundle.loadString(_kAssetPath);
final pairs = jsonDecode(json) as Map<String, dynamic>;
_removeExtraMetadata(pairs);
return pairs.map<String, MatexPairMetadata>((key, value) {
return MapEntry(
key,
MatexPairMetadata.fromJson(value as Map<String, dynamic>),
);
});
}