How to use the hexo-fs.rename function in hexo-fs

    ]).then(() => box.watch()).then(() => fs.rename(src, newSrc)).delay(500).then(() => {
      const lastTwoCalls = processor.args.slice(processor.args.length - 2, processor.args.length);

    ]).then(() => box.watch()).then(() => fs.rename(pathFn.join(box.base, 'a'), pathFn.join(box.base, 'b'))).delay(500).then(() => {
      const lastTwoCalls = processor.args.slice(processor.args.length - 2, processor.args.length);

moveToDraft(article, workspace) {
    const draft_dir = this.draft_dir;
    const filename = (article.filename ? article.filename : article.title) + suffix;
    const oldPath = this.getPathByWorkspace(workspace) + filename;
    const newPath = draft_dir + filename;
    fs.rename(oldPath, newPath)
      .then((err) => {
        if (err) {
          console.err(err);
        }
      });
  }

moveToTrash(article, workspace) {
    const trash_dir = this.trash_dir;
    const filename = article.filename + suffix;
    const oldPath = this.getPathByWorkspace(workspace) + filename;
    const newPath = trash_dir + filename;
    fs.rename(oldPath, newPath)
      .then((err) => {
        if (err) {
          console.err(err);
        }
      });
  }

moveToPost(article, workspace) {
    const filename = article.filename + suffix;
    const oldPath = this.getPathByWorkspace(workspace) + filename;
    const newPath = this.post_dir + filename;
    fs.rename(oldPath, newPath)
      .then((err) => {
        if (err) {
          console.err(err);
        }
      });
  }

publish(id) {
        if (this.type === "Page") return;
        let post = this.detail(id);
        let postDir = path.join(this.hexo.source_dir, '_posts');
        let newFullSource = path.join(postDir, path.basename(post.full_source));

        return fs.rename(post.full_source, newFullSource).then(() => this.updateDB());
    }

            .then(() => fs.rename(post.full_source, newFullSource))
            .then(() => this.updateDB());