Android Question Reverse map items

Sub Reverse(m As Map, p As String)
    For i = 0 To m.Size - 1
        Dim k As Object = m.GetKeyAt(i)
        Dim v As Object = m.GetValueAt(i)
        If v Is Map Then
            Reverse(m.Get(k), "/" & k)
        Else
            Log(p & "/" & k)
        End If
    Next
End Sub

Dim m As Map
m.Initialize
m.Put(1, "abc")
m.Put(2, CreateMap(1 : "abc", 2 : "def"))
m.Put(3, CreateMap(1 : "abc", 2 : "def", 3 : CreateMap(1 : "abc", 2: "def")))
Reverse(m, "")