Bitrix24 custom REST

gistfile1.php

<?
class CustomRestProvider
{
public static function OnRestServiceBuildDescription()
{
	return array(
		'custom' => array(
			'custom.hello.world' => array('callback' => array(__CLASS__, 'HelloWorld'),'options' => array()),
			)
	);
}
public static function HelloWorld($query, $n, \CRestServer $server)
{
	$result = array();
	$result['HELLO']='WORLD';	
	return $result;
}
}
?>