39   std::optional<Extern> get_export(std::string_view name);
86 template <> struct WasmType<std::optional<ExternRef>> {
90                     std::optional<ExternRef> &&ref) {  in store()
98                     const std::optional<ExternRef> &ref) {  in store()
105   static std::optional<ExternRef> load(Store::Context cx,  in load()
215   static std::optional<Trap> invoke(F f, Caller cx, wasmtime_val_raw_t *raw,  in invoke()
228   static std::optional<Trap> invoke(F f, Caller cx, wasmtime_val_raw_t *raw,  in invoke()
247   static std::optional<Trap> invoke(F f, Caller cx, wasmtime_val_raw_t *raw,  in invoke()
267   static std::optional<Trap> invoke(F &f, Caller cx, wasmtime_val_raw_t *raw) {  in invoke()
282   static std::optional<Trap> invoke(F &f, Caller cx, wasmtime_val_raw_t *raw) {  in invoke()
636 inline Val::Val(std::optional<Func> func) : val{} {  in Val()
645 inline Val::Val(Func func) : Val(std::optional(func)) {}  in Val()
646 inline Val::Val(ExternRef ptr) : Val(std::optional(ptr)) {}  in Val()
647 inline Val::Val(AnyRef ptr) : Val(std::optional(ptr)) {}  in Val()
649 inline std::optional<Func> Val::funcref() const {  in funcref()
660 template <> struct detail::WasmType<std::optional<Func>> {
667                     const std::optional<Func> func) {  in store()
675   static std::optional<Func> load(Store::Context cx, wasmtime_val_raw_t *p) {  in load()