How to Catch 'onEventRemoved'

[alexpaper]

Hi, I want to connect the calendar to a database, when I remove an appointment from the calendar
I need to remove the appointment from the database as well, how I can catch/listen for onEventRemoved event to
see the appointment ID removed?

calendarInstance.onEventRemoved(e => {
console.log(e);
});

Thank for the great project!