Block::update

static function update($id, $fields = array())
{
	if (
		!defined('LANDING_MUTATOR_MODE') ||
		LANDING_MUTATOR_MODE !== true
	)
	{
		throw new BitrixMainSystemException(
			'Disabled for direct access.'
		);
	}
	else
	{
		return parent::update($id, $fields);
	}
}