@Override
	public synchronized Version[] getVersions() throws IOException {
		synchronized (fileSystem) {
			if (!isVersioned) {
				throw new UnsupportedOperationException(
					"Non-versioned item does not support getVersions");
			}
			return historyMgr.getVersions();
		}
	}
@see ghidra.framework.store.FolderItem#getVersions()
Ghidra/Framework/FileSystem/src/main/java/ghidra/framework/store/local/LocalFolderItem.java