sk_IPAddressFamily_value
af = sk_IPAddressFamily_value(addr, i);
const IPAddressFamily *a = sk_IPAddressFamily_value(addr, i);
const IPAddressFamily *b = sk_IPAddressFamily_value(addr, i + 1);
af = sk_IPAddressFamily_value(addr, i);
af = sk_IPAddressFamily_value(addr, i);
af = sk_IPAddressFamily_value(addr, i);
child_af = sk_IPAddressFamily_value(child, i);
child_af = sk_IPAddressFamily_value(child, i);
child_af = sk_IPAddressFamily_value(child, i);
parent_af = sk_IPAddressFamily_value(parent, i);
return sk_IPAddressFamily_value(parent, index);
af = sk_IPAddressFamily_value(addr, i);
family = sk_IPAddressFamily_value(addrs, i);
af = sk_IPAddressFamily_value(addrs, i);
af = sk_IPAddressFamily_value(*addrs, i);
af = sk_IPAddressFamily_value(addrblk, i);