Before the request is sent to the aggregator api, add a filter so that weird attributes on the event host can be mapped to sane attributes in the aggregator server before they are sent to the receiving TEC calendar
for example XYZ-ATTRIBUTE => ORGANIZER
where XYZ-ATTRIBUTE is an attribute that is served from the originating host and ORGANIZER is defined here https://www.kanzaki.com/docs/ical/organizer.html2 votes
Google Calendar and the ICS spec both define the ATTACH attribute.
Here it is in the ICal spec https://www.kanzaki.com/docs/ical/attach.html
Import this data as meta data1 vote
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