Opaque list: [Element 1, Element 2]
Back element is Element 2
1/2 : Element 1
2/2 : Element 2
Opaque list: [Element 1]
Opaque list: []
Opaque list: [Element 1, Element 3]
Got void ptr : 1234
None
Got null str : 0
<example.StringList object at 0x104a47500>
Opaque list: [some value]