Create virtual page on WP

virtual-page.php

<?php

namespace MeuPlugin;

$voting_page = apply_filters( 'voting_page', 'create-voting' );
define( 'MEUPLUGIN_VOTING_PAGE', $voting_page );

function add_rewrite()
{
	add_rewrite_rule('^concordamos/' . CONCORDAMOS_VOTING_PAGE . '/?', 'index.php?voting_page=1', 'top');
}
// add_action( 'init', 'MeuPlugin\add_rewrite' );

function add_query_vars($vars)
{
	$vars[] = 'voting_page';
	return $vars;
}
// add_filter( 'query_vars', 'MeuPlugin\add_query_vars' );

function add_parse_request( $wp )
{
	if ( array_key_exists( 'voting_page', $wp->query_vars ) ) {
		include MEUPLUGIN_PLUGIN_PATH . 'templates/create-voting.php';
		exit;
	}
}
// add_action( 'parse_request', 'MeuPlugin\add_parse_request' );