in idea-plugin/src/main/java/com/jetbrains/ide/streamdeck/keymap/ActionsTree.java [455:469]
public void storePaths() {
myPathsToExpand = new ArrayList<>();
mySelectionPaths = new ArrayList<>();
DefaultMutableTreeNode root = (DefaultMutableTreeNode)myTree.getModel().getRoot();
TreePath path = new TreePath(root.getPath());
if (myTree.isPathSelected(path)) {
addPathToList(root, mySelectionPaths);
}
if (myTree.isExpanded(path) || root.getChildCount() == 0) {
addPathToList(root, myPathsToExpand);
_storePaths(root);
}
}