decodeMapOrNull<K, V> method
Decodes the data as a nullable map of key-value pairs.
Optionally takes Decodables to decode the keys and values of the map.
Implementation
@override
Map<K, V>? decodeMapOrNull<K, V>({Decodable<K>? keyUsing, Decodable<V>? valueUsing}) {
throw CodableException.unsupportedMethod('CsvDecoder', 'decodeMapOrNull',
reason: 'Row-level decoding only supports decodeKeyed() and decodeMapped().');
}