`email_events` schema does not include support for additional properties

[dsprayberry]

HubSpot's Email Events object can include additional properties obsoletedBy and causedBy, though these are not currently included in the schema for email_events.

This page of their documentation has more information on the properties: https://developers.hubspot.com/docs/methods/email/email_events_overview

"obsoletedBy | JSON | The EventId which uniquely identifies the follow-on event which makes this current event obsolete. If not applicable, this property is omitted."

"causedBy | JSON | The EventId which uniquely identifies the event which directly caused this event. If not applicable, this property is omitted."

Hubspot doesn't appear to outline the actual format of the JSON returned for these properties in any of their reference documentation.