private ListingModel getModel() {
		ListingPanel listingPanel = provider.getListingPanel();
		return listingPanel.getListingModel();
	}
Action for recursively collapsing an expandable data element in the listing.  This action
can be invoked on an expandable data element or any sub element and will close the
outer most data element and all child elements of that structure.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/codebrowser/actions/CollapseAllDataAction.java