LastUsed::execute

public function execute(array &$option): bool
{
	$lastId = Option::get('landing', self::OPTION_CODE, 0);

	if (!isset($option['steps']))
	{
		$option['steps'] = 0;
	}

	// total counts
	$option['count'] = count(BlockTable::getList([
		'select' => [
			'CREATED_BY_ID',
			new BitrixMainEntityExpressionField(
				'CNT', 'COUNT(*)'
			)
		],
		'filter' => [
			'=PUBLIC' => 'N'
		],
		'group' => [
			'CREATED_BY_ID'
		]
	])->fetchAll());

	// current step
	$finished = true;
	$resBlocks = BlockTable::getList([
		'select' => [
			'CREATED_BY_ID'
		],
		'filter' => [
			'=PUBLIC' => 'N',
			'>CREATED_BY_ID' => $option['steps']
		],
		'group' => [
			'CREATED_BY_ID'
		],
		'order' => [
			'CREATED_BY_ID' => 'asc'
		]
	]);
	if ($row = $resBlocks->fetch())
	{
		$finished = false;
		$option['steps']++;
		self::massInsertBlocks($row['CREATED_BY_ID']);
	}

	if (!$finished)
	{
		Option::set('landing', self::OPTION_CODE, $lastId);
		return true;
	}
	else
	{
		Option::delete('landing', ['name' => self::OPTION_CODE]);
		return false;
	}
}