@Override
	public void finalize() {
		// Don't log warning for GFileSystemBase instances since they have a different lifecycle
		// where instances are created and thrown away without a close() to probe
		// filesystem container files.
		if (fs != null && !(fs instanceof GFileSystemBase)) {
			Msg.warn(this, "Unclosed FilesytemRefManager for filesystem: " + fs.getClass() + ", " +
				fs.getName());
		}
	}
Called from the {@link GFileSystem#close()} before any destructive changes have
been made to gracefully shutdown the ref manager.
<p>
Broadcasts {@link FileSystemEventListener#onFilesystemClose(GFileSystem)}.
Ghidra/Features/Base/src/main/java/ghidra/formats/gfilesystem/FileSystemRefManager.java