How to use the zappa.utilities.remove_event_source function in zappa

event_source = {'arn': 'blah:blah:blah:blah', 'events': [
                    "s3:ObjectCreated:*"
                  ]}
        # Sanity. This should fail.
        try:
            es = add_event_source(event_source, 'blah:blah:blah:blah', 'test_settings.callback', session)
            self.fail("Success should have failed.")
        except ValueError:
            pass

        event_source = {'arn': 's3:s3:s3:s3', 'events': [
                    "s3:ObjectCreated:*"
                  ]}
        add_event_source(event_source, 'lambda:lambda:lambda:lambda', 'test_settings.callback', session, dry=True)
        remove_event_source(event_source, 'lambda:lambda:lambda:lambda', 'test_settings.callback', session, dry=True)
        # get_event_source_status(event_source, 'lambda:lambda:lambda:lambda', 'test_settings.callback', session, dry=True)

print('Unscheduled ' + rule_name + '.')

        non_cwe = [e for e in events if 'event_source' in e]
        for event in non_cwe:
            # TODO: This WILL miss non CW events that have been deployed but changed names. Figure out a way to remove
            # them no matter what.
            # These are non CWE event sources.
            function = event['function']
            name = event.get('name', function)
            event_source = event.get('event_source', function)
            service = self.service_from_arn(event_source['arn'])
            # DynamoDB and Kinesis streams take quite a while to setup after they are created and do not need to be
            # re-scheduled when a new Lambda function is deployed. Therefore, they should not be removed during zappa
            # update or zappa schedule.
            if service not in excluded_source_services:
                remove_event_source(
                    event_source,
                    lambda_arn,
                    function,
                    self.boto_session
                )
                print("Removed event {}{}.".format(
                        name,
                        " ({})".format(str(event_source['events'])) if 'events' in event_source else '')
                )