google Script insert as HTML

If I have the string:

var text = "Altman, R. (1992). Sound space. In R. Altman (Ed.), <em>Sound Theory Sound Practice</em> (pp. 46–64). New York: Routledge.";

How can I insert this into Google Docs with the required italics intact?

var cursor = DocumentApp.getActiveDocument().getCursor();cursor.insertText('here: '+ text);

Inserts the text as is (without displaying italics and showing the <em>...</em>).

A few people have asked similar questions here without success mostly getting answers that relate to creating a new document using the Drive service (I want to insert HTML text anywhere in an existing document).

I've come across intriguing snippets such as:

var text = Utilities.newBlob("").setDataFromString(response.bibEntry, "UTF-8").setContentType("text/html");

or:

var text = doGet('<b>Hello, world!</b>');function doGet(text) {return HtmlService.createHtmlOutput(text);}

But these appear to return objects which I've no idea how to use – trying to use insertText(text), I get 'Blob' and 'HtmlOutput' respectively.