Are there any hooks in shopware 6?

I want to replace the “mapCustomerData”(Shopware\Core\Checkout\Customer\SalesChannel\AccountRegistrationService) function with some custom modifications.Are there any hooks in shopware 6?

Use events -> https://docs.shopware.com/en/shopware-platform-dev-en/internals/core/data-abstraction-layer/events in Storefront etc. are always *Event.php Classes (for examle -> /platform/src/Storefront/Pagelet/Header/HeaderPageletLoadedEvent.php )