Push iCal file (ics) into Plone

describes a way to import a iCal file via a "@@ical_import_settings" form. Is there a way to have a client push (via PUT or POST) the iCal file into Plone 5?

Maybe via /@@ical_import_tool, which displays:

<Products.Five.metaclass.IcalendarImportTool object at 0x7feaefc0a090>