Breaking: #67402 - Extbase AbstractDomainObject initializeObject 

See forge#67402

Description 

Method initializeObject() has been removed from TYPO3\CMS\Extbase\DomainObject\AbstractDomainObject.

Impact 

Possible fatal error in Extbase if objects are thawed from persistence.

Affected Installations 

Domain objects extending AbstractDomainObject and calling parent::initializeObject(). This is relatively unlikely since the default implementation of initializeObject() is empty.

Migration 

Remove calls to parent::initializeObject() from own initializeObject() implementations.