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_str_value("appStoreUrl", self.app_store_url)
        writer.write_object_value("applicableDeviceType", self.applicable_device_type)
        writer.write_str_value("bundleId", self.bundle_id)
        writer.write_object_value("licensingType", self.licensing_type)
        writer.write_datetime_value("releaseDateTime", self.release_date_time)
        writer.write_int_value("totalLicenseCount", self.total_license_count)
        writer.write_int_value("usedLicenseCount", self.used_license_count)
        writer.write_enum_value("vppTokenAccountType", self.vpp_token_account_type)
        writer.write_str_value("vppTokenAppleId", self.vpp_token_apple_id)
        writer.write_str_value("vppTokenOrganizationName", self.vpp_token_organization_name)

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