private static void recurseClose(@Nonnull TreeItem<?> item) {
		if (!item.isLeaf() && item.isExpanded()) {
			item.setExpanded(false);
			item.getChildren().forEach(TreeItems::recurseClose);
		}
	}
Closes children recursively.

@param item
		Item to recursively close.
recaf-ui/src/main/java/software/coley/recaf/ui/control/tree/TreeItems.java