private void dispose(Folder folder) {
		for (Folder subfolder : folder.folders.values()) {
			dispose(subfolder);
		}
		folder.folders.clear();

		for (Item item : folder.items.values()) {
			item.parent = null;
		}
		folder.items.clear();
	}
Dispose folder structure to speed-up garbage collection
@param folder
Ghidra/Framework/FileSystem/src/main/java/ghidra/framework/store/local/IndexedLocalFileSystem.java