B4J Question [JDA] Retrieve Archived Public Thread Channels?

Sub ListAllChannelsAndThreads(chan As MessageChannel)
    Dim guilds As List = jda.Guilds

    For Each gw As Guild In guilds
        SendMessage(chan,$"Guild: ${gw.Name} (ID: ${gw.Id})"$)
        
'        ' All guild channels
        Dim chans As List = gw.GuildChannels
        For Each ch As GuildChannel In chans
            SendMessage(chan,$"  Channel: ${ch.name} [${ch.ID}] Type: ${ch.Type}"$)
        Next
        
        ' All active threads at guild
        Dim threads As List = gw.ThreadChannels  ' List of ThreadChannelwrapper
        For Each th As ThreadChannel In threads
            SendMessage(chan,$"  Thread: ${th.Name} [${th.ID}] Parent: ${th.ParentChannel}"$)
        Next
    Next
End Sub