decodeMapped method
Decodes the data as a collection of key-value pairs. The values are accessed and decoded based on the provided key.
Implementation
@override
MappedDecoder decodeMapped() {
throw CodableException.unsupportedMethod('CsvDecoder', 'decodeMapped',
reason: 'Row-level decoding only supports decodeKeyed() and decodeMapped().');
}