Deprecation: #62795 - DocumentTemplate->endPageJS()

See forge#62795

Description

Method TYPO3\CMS\Backend\Template\DocumentTemplate::endPageJS() and the according property endJS have been marked as deprecated.

Impact

None, as it isn't in use anymore since TYPO3 CMS 4.5 and was responsible for notifying the browser that the session is still active.

Affected installations

Installations misusing top.busy until now for their own good will break.