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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def nlmsg_attrdata(nlh, hdrlen):
 """Head of attributes data. https://github.com/thom311/libnl/blob/libnl3_2_25/lib/msg.c#L143 Positional arguments: nlh -- Netlink message header (nlmsghdr class instance). hdrlen -- length of family specific header (integer). Returns: First attribute (nlattr class instance with others in its payload). """

    data = nlmsg_data(nlh)
    return libnl.linux_private.netlink.nlattr(bytearray_ptr(data, libnl.linux_private.netlink.NLMSG_ALIGN(hdrlen)))