getByUsernames method
Implementation
FutureOr<List<APIToken>> getByUsernames(Iterable<String> usernames,
{required bool checkExpiredTokens}) =>
usernames
.toSet()
.map((username) =>
getByUsername(username, checkExpiredTokens: checkExpiredTokens))
.resolveAllJoined((l) => l.expand((l) => l).toList());