constructor(
      userIdentifier, onCancelClick, adminEmail, emailHelperCallback,
      tosCallback, privacyPolicyCallback, domHelper) {
    super(
        page.unauthorizedUser,
        {
          userIdentifier: userIdentifier,
          adminEmail: adminEmail,
          displayHelpLink: !!emailHelperCallback
        },
        domHelper, 'unauthorizedUser', {
          tosCallback: tosCallback,
          privacyPolicyCallback: privacyPolicyCallback,
        });
    this.onCancelClick_ = onCancelClick;
    this.onEmailHelperClick_ = emailHelperCallback;
  }
@param {?string} userIdentifier The user identifier of the account, can be
    email address or phone number.
@param {function()} onCancelClick Callback to invoke when the back button
    is clicked.
@param {?string=} adminEmail The admin email to contact with.
@param {?function()=} emailHelperCallback Callback to invoke when the
    email helper link is clicked.
@param {?function()=} tosCallback Callback to invoke when the ToS link
    is clicked.
@param {?function()=} privacyPolicyCallback Callback to invoke when the
    Privacy Policy link is clicked.
@param {?DomHelper=} domHelper Optional DOM helper.