How to find out the composition of a cluster?

Question

Yandex maps

There is a problem: there are 3 points on the map. When deleting, I get one free-standing icon and a cluster with the inscription 2. When you click on a separate icon, it becomes active, I put inactive icons for all other points. When deleting, how can I find out that the active point is part of a specific cluster. I want to change his icon to active.
You don’t need to decide on the code, the main thing is to understand the logic, there are no icons in the DOM, they are loaded later (that is, there are no icons in the cluster DOM when deleting)

Answer 1

But after all, all this is in the documentation, you didn’t open it at all?
https://tech.yandex.ru/maps/jsapi/doc/2.1/ref/ref...