validatePathParameters example

            'uid' => $uid,
            'timestamp' => $timestamp,
            'hash' => $hash,
          ]
        );
      }
      // A different user is already logged in on the computer.       else {
        /** @var \Drupal\user\UserInterface $reset_link_user */
        $reset_link_user = $this->userStorage->load($uid);
        if ($reset_link_user && $this->validatePathParameters($reset_link_user, $timestamp, $hash)) {
          $this->messenger()
            ->addWarning($this->t('Another user (%other_user) is already logged into the site on this computer, but you tried to use a one-time link for user %resetting_user. Please <a href=":logout">log out</a> and try using the link again.',
              [
                '%other_user' => $account->getAccountName(),
                '%resetting_user' => $reset_link_user->getAccountName(),
                ':logout' => Url::fromRoute('user.logout')->toString(),
              ]));
        }
        else {
          // Invalid one-time link specifies an unknown user.           $this->messenger()->addError($this->t('The one-time login link you clicked is invalid.'));
        }