Collapsed resource on default

Gantt
#1

How can I make the hierarchy tree in resources closed for everyone by default, that is, so that all resources are collapsed?

#2

Hello,
You can set the $open property to false for each item in the resource store:

const store = gantt.getDatastore(gantt.config.resource_store);

store.eachItem(function (item) {
    item.$open = false;
});