Deprecation: #89579 - ServiceChains require an array for excluded Service keys

See Issue #89579

Description

The Service API within GeneralUtility::makeInstanceService() and ExtensionManagementUtility::findService() has a third argument called $excludeServiceKeys which is used for skipping certain services when using a chain.

The third argument could previously be a comma-separated list or an array. The argument now requires an array for consistency and performance reasons.

Handing in comma-separated value strings is deprecated and will be removed in TYPO3 v11.0.

Impact

Calling any of the methods above with a non-array as third argument will trigger a deprecation notice.

Affected Installations

Any TYPO3 installation with custom extensions using the Service API directly. Extensions that ship a custom authentication provider are not affected.

Migration

Ensure to hand in an array as third argument.