Android Question Firebase: Waiting for a token, waiting for subscriptions to complete etc?

Wait For (fa_rest.signUpEmailPW("test@test.com","Test123!",True)) complete (root As Map)

Public Sub signInEmailPW(email As String, password As String,returnSecureToken As Boolean) As ResumableSub
    
    Dim url As String = $"https://identitytoolkit.googleapis.com/v1/accounts:signInWithPassword?key=${API_KEY}"$
    
    Dim json As JSONGenerator
    json.Initialize(CreateMap("email":email,"password":password,"returnSecureToken":returnSecureToken))
    Dim j As HttpJob : j.Initialize("",Me)
    j.PostString(url,json.ToString)
    j.GetRequest.SetContentType("application/json")
    
    Wait For (j) JobDone(j As HttpJob)
    If j.Success Then
        Log(j.GetString)
        Else
        Log(j.ErrorMessage)
    End If
j.Release
Return True 'done
End Sub

Public Sub SubscribeToTopic (Topic As String)
    fm.SubscribeToTopic(Topic)
End Sub


Public Sub UnsubscribeToTopics(topic As String)
    fm.UnsubscribeFromTopic(topic)
End Sub

log(fm.token)

Sub Service_Create
    Log("Firebase create...")
    fm.Initialize("fm")
    Do While fm.token = ""
        Log("Sleep250")
        Sleep(250)
    Loop
    Token = fm.token
End Sub