#[unsafe(no_mangle)]pub unsafe extern "C" fn wasmtime_valtype_to_wasm(
engine: Option<&wasm_engine_t>,
r: &wasmtime_valtype_t,
) -> Box<wasm_valtype_t>#[unsafe(no_mangle)]pub unsafe extern "C" fn wasmtime_valtype_to_wasm(
engine: Option<&wasm_engine_t>,
r: &wasmtime_valtype_t,
) -> Box<wasm_valtype_t>