Deprecation: #62795 - DocumentTemplate->endPageJS()¶
TYPO3\CMS\Backend\Template\DocumentTemplate::endPageJS() and the according property
endJS have been marked as deprecated.
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.
Installations misusing top.busy until now for their own good will break.