clickTracking function in sendgrid does not exist in @sendgrid package

sendgrid package moved @sendgrid so its api has changed.

before in sendgrid package there was clickTracking package to track the users who clicked on the links.

clickTracking function in sendgrid:

function ClickTracking(enable, enable_text) {
  this.enable = enable;
  this.enable_text = enable_text;

  this.setEnable = function(enable) {
    this.enable = enable;
  };

  this.getEnable = function() {
    return this.enable;
  };

  this.setEnableText = function(enable_text) {
    this.enable_text = enable_text;
  };

  this.getEnableText = function() {
    return this.enable_text;
  };

  this.toJSON = function() {
    var json = {
      enable: this.getEnable(),
      enable_text: this.getEnableText(),
    };
    return json;
  };

  return this;
}

However in @sendgrid there is no clickTracking function. so how can I implement code to keep tracking links inside my emails with @sendgrid package.