@Override
		PropertyFile getPropertyFile() throws IOException {
			return new IndexedPropertyFile(dir, storageName, folderPath, itemName);
		}
Completely rebuild filesystem index using item information contained
within indexed property files.  Empty folders will be lost.
@param rootDir
@throws IOException
Ghidra/Framework/FileSystem/src/main/java/ghidra/framework/store/local/IndexedLocalFileSystem.java