docs: function urldata(value){
    if(!value){
      return;
    }
    var result = [];
    var urlCursor = value.indexOf("url");
    var start = 0;
    var end = 0;
    while(urlCursor >= 0){
      start = urlCursor + 3;
  
      while(value[start] === " "){ start++; }
  
      if(value[start] === "("){
        start ++;
      } else {
        return result;
      }
  
      while(value[start] === " "){ start++; }
  
      var openQuote = value[start];
      if(openQuote === "\'" || openQuote === "\""){
        start++;
      } else {
        openQuote = "";
      }
  
      if(!openQuote){
        while(value[start] === " "){ start++; }
      }
  
      if (!openQuote) {
          end = value.indexOf(")", start);
      } else {
          end = start;
          while(value[end] !== openQuote && end < value.length) { end++; }
          while(value[end] !== ")" && end < value.length){ end++; }
      }
      
      if(end < 0){
        return result;
      } else if (end === value.length) {
        return result;
      }
      end--;
      while(value[end]===" "){
        end--;
      }
      if(!!openQuote){
        if(value[end] === openQuote){
          end--;
        } else {
          start--;
        }
      }
      result[result.length] = value.slice(start, end + 1);
      urlCursor = value.indexOf("url", end);
    }
    return result;
  }