public static extern FuncTypeHandle wasm_functype_new(ref wasm_valtype_vec_t parameters, ref wasm_valtype_vec_t results);
public static extern void wasm_valtype_vec_delete(ref wasm_valtype_vec_t vec);
public static extern void wasm_valtype_vec_copy(out wasm_valtype_vec_t vec, ref wasm_valtype_vec_t src);
public static extern void wasm_valtype_vec_new(out wasm_valtype_vec_t vec, UIntPtr length, IntPtr[] data);
public static extern void wasm_valtype_vec_new_uninitialized(out wasm_valtype_vec_t vec, UIntPtr length);
public static extern void wasm_valtype_vec_new_empty(out wasm_valtype_vec_t vec);