def METHOD_NAME(self, start, end):
    response = self.api_client.get("meetings", start=start, end=end)
    events = set()
    for item in response["result"]["items"]:
        for event, name in self.upper_parse_agenda_item(item):
            if name in events:
                self.warning(f"Duplicate event: {name}")
                continue
            events.add(name)
            yield event