merge method
Implementation
UMediaMetadata merge(UMediaMetadata other) => UMediaMetadata(
title: other.title ?? title,
artist: other.artist ?? artist,
album: other.album ?? album,
albumArtist: other.albumArtist ?? albumArtist,
composer: other.composer ?? composer,
genre: other.genre ?? genre,
year: other.year ?? year,
trackNumber: other.trackNumber ?? trackNumber,
trackCount: other.trackCount ?? trackCount,
discNumber: other.discNumber ?? discNumber,
duration: other.duration ?? duration,
artwork: other.artwork ?? artwork,
lyrics: other.lyrics ?? lyrics,
comment: other.comment ?? comment,
extras: <String, String>{...extras, ...other.extras},
);