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.")
        writer.write_collection_of_object_values("attendees", self.attendees)
        writer.write_enum_value("remindBeforeTimeInMinutesType", self.remind_before_time_in_minutes_type)
        writer.write_additional_data_value(self.additional_data)

        Serializes information the current object
        param writer: Serialization writer to use to serialize this model
        Returns: None
        
msgraph/generated/communications/online_meetings/item/send_virtual_appointment_reminder_sms/send_virtual_appointment_reminder_sms_post_request_body.py