private async Task <bool> IsMemberAsync(
ulong userId,
Func <CancellationToken, Task <IEnumerable <ulong> > > getGuildIdsDelegate,
CancellationToken cancellationToken)
{
AuthenticationLogMessages.GuildIdsFetching(_logger, userId);
var guildIds = await getGuildIdsDelegate.Invoke(cancellationToken);
AuthenticationLogMessages.GuildIdsFetched(_logger, userId);
return(guildIds
.Intersect(_authorizationConfiguration.MemberGuildIds)
.Any());
}
