Add cloudevents attribute (if missing) during the encoding process.

Add cloudevents extension (if missing) during the encoding process.

Delete cloudevents attribute during the encoding process.

Delete cloudevents extension during the encoding process.

Sets a cloudevents attribute (if missing) to defaultValue or update it with updater function.

Sets a cloudevents extension (if missing) to defaultValue or update it with updater function.

Update cloudevents attribute (if present) using the provided function.

Update cloudevents extension (if present) using the provided function.

Converts the event context version to the specified one.

Add the cloudevents time attribute, if missing, to time.Now().

Sets the cloudevents id attribute to a UUID.New().