Can i generate some TSX/JSX code somehow?

Let's say I want to generate a function which returns some TSX, like:

```typescript
export default function Layout({ children }) {
return (


my website

);
}
```

how would I define the function body? The only method I have found for now is using a multiline string and call `setBodyText()` with it. Also, modifying eg: stuff within the `` in a clean way would be really awesome! Is there any support for TSX planned?

Start by reviewing the existing function-body generation API, especially the multiline-string approach using setBodyText(), and compare it with the requested TSX example. Determine what TSX/JSX generation and clean edits inside the head and body should support, then verify the resulting API against the example; the issue names no files or tests.

Written by the indexing model from the issue text.