outlook_calendar-8.x-4.1/src/Controller/OutlookAccountController.php

<?php

namespace Drupal\outlook_calendar\Controller;

use Drupal\Core\Controller\ControllerBase;
use Drupal\Core\Url;

/**
 * Class OutlookAccountController.
 *
 * @package Drupal\outlook_calendar\Controller
 */
class OutlookAccountController extends ControllerBase {

	/**
	 * {@inheritdoc}
	 */
	public function eventsDisplay() {
		// Create table header.
		$header = [
			'id' => $this->t('ID'),
			'mail' => $this->t('MAIL'),
			'opt' => $this->t('EDIT LINK'),
			'opt1' => $this->t('DELETE LINK'),
		];

		$form['account'] = [
			'#title' => $this->t('+Add Account'),
			'#type' => 'link',
			'#url' => Url::fromRoute('outlook_calendar.create'),
		];
		// Display data in site.
		$form['table'] = [
			'#type' => 'table',
			'#header' => $header,
			'#rows' => outlook_calendar_account_list(),
			'#empty' => $this->t('No users found'),
		];
		return $form;
	}

}