Method WrapFunction

runtime/function_adapter.h:287–289

      absl::AnyInvocable<T(U, const Function::InvokeContext&) const>;

  static std::unique_ptr<cel::Function> WrapFunction(FunctionType fn) {
    return std::make_unique<UnaryFunctionImpl>(std::move(fn));
  }

  template <typename F>
  static std::enable_if_t<