Block::register

static function register($codes, array $params = [])
{
	if (!is_array($codes))
	{
		$codes = [$codes];
	}

	$res = UpdateBlock::getList([
		'select' => [
			'ID', 'CODE'
		],
		'filter' => [
			'=CODE' => $codes
		]
	]);
	while ($row = $res->fetch())
	{
		UpdateBlock::update($row['ID'], [
			'LAST_BLOCK_ID' => 0,
			'PARAMS' => $params
		]);
		$codes = array_diff($codes, [$row['CODE']]);
	}

	if (!empty($codes))
	{
		foreach ($codes as $code)
		{
			UpdateBlock::add([
				'CODE' => $code,
				'PARAMS' => $params
			]);
		}
	}

	// reg stepper
	BitrixMainUpdateStepper::bindClass(
		'BitrixLandingUpdateBlock', 'landing', 600
	);
}