URL getLinkFileURL() throws IOException {
		if (!isLinkFile()) {
			return null;
		}
		FolderItem item = folderItem != null ? folderItem : versionedFolderItem;
		return LinkHandler.getURL(item);
	}
Get URL associated with a link-file.  The URL returned may reference either a folder
or a file within another project/repository.
@return link-file URL or null if not a link-file
@throws IOException if an IO error occurs
Ghidra/Framework/Project/src/main/java/ghidra/framework/data/GhidraFileData.java