docs: function remapBlocks(blocks, tokens) {
      return utils.map(tokens, function (token) {
        var args = token.args ? token.args.join('') : '';
        if (token.name === 'block' && blocks[args]) {
          token = blocks[args];
        }
        if (token.content && token.content.length) {
          token.content = remapBlocks(blocks, token.content);
        }
        return token;
      });
    }