The docs say to use `this.$axios.$get()` inside of `methods/mounted/etc`, but that throws `TypeError: _this is undefined` when called inside of `setup()`. Is `$axios` compatible with the composition API?

To clarify, I'm specifically talking about the axios nuxt plugin, not just using axios generically. <https://axios.nuxtjs.org/>

So for instance, something like this throws the error above

```
export default {
  setup: () => {
    const data = this.$axios.$get("/my-url");
  }
}

```