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        return resultUri

    }

    /**

     * Adds or updates the calendar provider [Events] main row for this [event].

     *

     * @param batch batch operation for insert/update operation

     *

     * @return [Events._ID] of the created/updated row; *null* if now ID is available

     */

    fun addOrUpdateRows(batch: BatchOperation): Int? {

        val event = requireNotNull(event)

        val builder =

    }

    /**

     * Builds an Android [Events] row for a given ical4android [Event].

     *

     * @param recurrence   event to be used as data source; *null*: use this AndroidEvent's main [event] as source

     * @param builder      data row builder to be used

     */

    @CallSuper

    protected open fun buildEvent(recurrence: Event?, builder: CpoBuilder) {

        val event = recurrence ?: requireNotNull(event)