build method
Implementation
@override
Map<String, Object?> build() => {
if (!identical(nick, sentinelString)) 'nick': nick,
if (!identical(banner, sentinelImageBuilder))
'banner': banner?.buildDataString(),
if (!identical(avatar, sentinelImageBuilder))
'avatar': avatar?.buildDataString(),
if (!identical(bio, sentinelString)) 'bio': bio,
};