def serialize(self,writer: SerializationWriter) -> None:
        """
        Serializes information the current object
        param writer: Serialization writer to use to serialize this model
        Returns: None
        """
        if writer is None:
            raise TypeError("writer cannot be null.")
        super().serialize(writer)
        writer.write_bytes_value("attendeeReport", self.attendee_report)
        writer.write_object_value("broadcastSettings", self.broadcast_settings)
        writer.write_datetime_value("creationDateTime", self.creation_date_time)
        writer.write_datetime_value("endDateTime", self.end_date_time)
        writer.write_str_value("externalId", self.external_id)
        writer.write_bool_value("isBroadcast", self.is_broadcast)
        writer.write_str_value("meetingTemplateId", self.meeting_template_id)
        writer.write_object_value("participants", self.participants)
        writer.write_collection_of_object_values("recordings", self.recordings)
        writer.write_datetime_value("startDateTime", self.start_date_time)
        writer.write_collection_of_object_values("transcripts", self.transcripts)

        Serializes information the current object
        param writer: Serialization writer to use to serialize this model
        Returns: None
        
msgraph/generated/models/online_meeting.py