translate method
Implementation
Map<String, dynamic> translate(
final Map<String, dynamic> json,
final List<String> props,
) {
if (json.isEmpty) return const <String, dynamic>{};
final result = <String, dynamic>{};
for (final entry in json.entries) {
if (entry.key == r'$type') {
result[entry.key] = entry.value;
} else if (props.contains(entry.key)) {
result[entry.key] = entry.value;
} else {
result[r'$unknown'] ??= <String, dynamic>{};
result[r'$unknown']![entry.key] = entry.value;
}
}
return result;
}