code: function getUrlToken({ tokens, intEmphasis, num }) {
    const urlContent = `(${getAttr(tokens[num].attrs, 'href')})`;
    const urlLength = urlContent.length;
    const punctuation1 = {
      type: "punctuation",
      content: "[",
      length: 1
    };
    const punctuation2 = {
      type: "punctuation",
      content: "]",
      length: 1
    };
    const urlContentObj = {
      type: "punctuation",
      content: urlContent,
      length: urlLength
    };
    const content = Array.isArray(intEmphasis) ?
      [punctuation1, ...intEmphasis, punctuation2, urlContentObj] :
      [punctuation1, intEmphasis, punctuation2, urlContentObj];
    return {
      type: "url",
      content,
      length: Array.isArray(intEmphasis) ? getTokensLength(content) : 1 + intEmphasis.length + 1 + urlLength
    };
  }
docs: getUrlToken - Function create url-token
  
  @param tokens
  @param intEmphasis
  @param num
  @returns {{type: string, content: [null,null,null,null], length: *}}