def nl_list_add_tail(obj, head):
_nl_list_add(obj, head.prev, head)<EOL>
https://github.com/thom311/libnl/blob/libnl3_2_25/include/netlink/list.h#L37.

    Positional arguments:
    obj -- nl_list_head class instance.
    head -- nl_list_head class instance.