pub type AvahiServiceResolverCallback = Option<unsafe extern "C" fn(r: *mut AvahiServiceResolver, interface: AvahiIfIndex, protocol: AvahiProtocol, event: AvahiResolverEvent, name: *const c_char, type_: *const c_char, domain: *const c_char, host_name: *const c_char, a: *const AvahiAddress, port: u16, txt: *mut AvahiStringList, flags: AvahiLookupResultFlags, userdata: *mut c_void)>;
enum AvahiServiceResolverCallback {
None,
Some(unsafe extern "C" fn(_: *mut AvahiServiceResolver, _: i32, _: i32, _: u32, _: *const i8, _: *const i8, _: *const i8, _: *const i8, _: *const AvahiAddress, _: u16, _: *mut AvahiStringList, _: u32, _: *mut c_void)),
}