docs: function (lines, ip, host) {
      // Try to update entry, if host already exists in file
      var didUpdate = false;
      lines = lines.map(function (line) {
        if (Array.isArray(line) && line[1] === host) {
          line[0] = ip;
          didUpdate = true;
        }
        return line;
      });
  
      // If entry did not exist, let's add it
      if (!didUpdate) {
        lines.push([ip, host]);
      }
      return lines;
    }