How do I open all nodes in jquery Jstree?

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I am using the following code:

$("#treeview").jstree();
$("#treeview").jstree(\'open_all\');

With the following html:

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灰色年华 (楼主)

2021-02-05 00:42

When using html data 'you can set the jstree-open class on any
element to make it initially extended, so that its children are visible.' - https://www.jstree.com/docs/html/
```
My Open Node
```

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