AudioPayload.fromJson constructor
Implementation
factory AudioPayload.fromJson(Map<String, Object?> j) => AudioPayload(
url: j['url'] as String? ?? '',
duration: j['durationMs'] != null
? Duration(milliseconds: j['durationMs'] as int)
: null,
filename: j['filename'] as String?,
fileSizeBytes: j['fileSizeBytes'] as int?,
);