2018-10-04 UTC
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[kevinmarks] looking at possible ones - gData doesn;t seem to - they have a DELETE that actually deletes entries; Zend seems to output them https://api.drupal.org/api/drupal/vendor%21zendframework%21zend-feed%21src%21Writer%21Renderer%21Entry%21Atom%21Deleted.php/8.6.x