How to make balloon opening for objects in one place in google maps?

V

veydlin2017-06-01 23:59:16

JavaScript

veydlin, 2017-06-01 23:59:16

The fact is that there are markers of 5-20 pieces whose coordinates completely coincide
In Yandex there are balloons https://tech.yandex.ru/maps/doc/jsapi/2.1/dg/conce...
I did not find it in Google like how to do it?
It is desirable that he immediately opens the balloon if all the markers in the group are at one point, i.e. did not increase because this is pointless
Now I use InfoBox for windows, it would be even better if there is already a solution how to attach it to this task