def get_events
      begin
        if subscribed?
          resp = ews.get_events(@subscription_id, @watermark)
          rmsg = resp.response_messages[0]
          @watermark = rmsg.new_watermark
          # @todo if parms[:more_events] # get more events
          rmsg.events.collect{|ev|
            type = ev.keys.first
            class_by_name(type).new(ews, ev[type])
          }
        else
          raise EwsSubscriptionError, "Folder <#{self.display_name}> not subscribed to. Issue a Folder#subscribe before checking events."
        end
      rescue EwsSubscriptionTimeout => e
        @subscription_id, @watermark = nil, nil
        raise e
      end
    end
def get_events
      begin
        if subscribed?
          resp = ews.get_events(@subscription_id, @watermark)
          rmsg = resp.response_messages[0]
          @watermark = rmsg.new_watermark
          # @todo if parms[:more_events] # get more events
          rmsg.events.collect{|ev|
            type = ev.keys.first
            class_by_name(type).new(ews, ev[type])
          }
        else
          raise EwsSubscriptionError, "Folder <#{self.display_name}> not subscribed to. Issue a Folder#subscribe before checking events."
        end
      rescue EwsSubscriptionTimeout => e
        @subscription_id, @watermark = nil, nil
        raise e
      end
    end
Checks a subscribed folder for events
 @return [Array] An array of Event items