def event=(new_val)
      return nil if new_val == @event
      raise JSS::InvalidDataError, 'Unknown webhook event' unless EVENTS.include? new_val
      @event = new_val
      @need_to_update = true
    end
def event=(new_val)
      return nil if new_val == @event
      raise JSS::InvalidDataError, 'Unknown webhook event' unless EVENTS.include? new_val
      @event = new_val
      @need_to_update = true
    end
Set the event handled by this webhook
 Must be a member of the EVENTS Array

 @param new_val[String] The event name

 @return [void]