Walkthrough 3D object interior

Hello! Does exist some JS code of camera to walkthrough 3D object interior? Example: in this object
https://cesium.com/ion/stories/viewer/?id=2e279233-2542-4223-af9d-ee05e930677b

Hi there,

There’s no special code required for a 3D object interior. Here’s a simple sandcastle example demonstrating it. If you are looking for more contextual camera interaction, the camera tutorial sandcastle shows how you can apply some finer grained control.

I would also suggest looking into how 3D navigation works in architectural applications or even video games for ideas.

Thank you Gabby for information.
Kind Regards