Function gio_sys::g_resolver_lookup_by_name_with_flags_async

pub unsafe extern "C" fn g_resolver_lookup_by_name_with_flags_async(
    resolver: *mut GResolver, 
    hostname: *const c_char, 
    flags: GResolverNameLookupFlags, 
    cancellable: *mut GCancellable, 
    callback: GAsyncReadyCallback, 
    user_data: gpointer
)

This is supported on crate feature v2_60 only.