How to use the @theia/workspace/lib/common.getTemporaryWorkspaceFileUri function in @theia/workspace

protected async buildWorkspaceId(workspace: FileStat, roots: FileStat[]): Promise {
        const homeDir = await this.getUserHomeDir();
        const untitledWorkspace = getTemporaryWorkspaceFileUri(new URI(homeDir));

        if (untitledWorkspace.toString() === workspace.uri) {
            // if workspace is temporary
            // then let create a storage path for each set of workspace roots
            const rootsStr = roots.map(root => root.uri).sort().join(',');
            return crypto.createHash('md5').update(rootsStr).digest('hex');
        } else {
            const uri = new URI(workspace.uri);
            let displayName = uri.displayName;

            if ((!workspace || !workspace.isDirectory) && (displayName.endsWith(`.${THEIA_EXT}`) || displayName.endsWith(`.${VSCODE_EXT}`))) {
                displayName = displayName.slice(0, displayName.lastIndexOf('.'));
            }

            return crypto.createHash('md5').update(uri.toString()).digest('hex');
        }