Jenny Donlan: Will it be possible to add a code snippet to a document, specifying the language (like Java, JSON, C#, HTML, XML, etc.), and will it be formatted (colors) according to the chosen language standard? Something as shown in the attached image.

Lucio Ferro: This will be different, custom code snippet will be when you can add your own external scripts to embed it on your documentation e.g a chat tool, analytics tool, 3rd party form/widget etc.

For this, I would request you to raise a separate feature request. This will be the editor's enhancement where you can insert code blocks that can be nicely displayed on a page.