<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def nl_cb_call(cb, type_, msg):
 """Call a callback function. https://github.com/thom311/libnl/blob/libnl3_2_25/include/netlink-private/netlink.h#L136 Positional arguments: cb -- nl_cb class instance. type_ -- callback type integer (e.g. NL_CB_MSG_OUT). msg -- Netlink message (nl_msg class instance). Returns: Integer from the callback function (like NL_OK, NL_SKIP, etc). """

    cb.cb_active = type_
    ret = cb.cb_set[type_](msg, cb.cb_args[type_])
    cb.cb_active = 10 + 1  # NL_CB_TYPE_MAX + 1
    return int(ret)