Results

<?php
$results = $batches->results($reference);
if (!$results->isAvailable()) {
    // Pending or unavailable: inspect availability() and unavailableReason().
    return;
}

foreach ($results->items() as $item) {
    $key = $item->key();
    if ($key === null) {
        // A provider emitted an uncorrelated failure; inspect provenance().
        continue;
    }
    if ($item->result()->isSuccess()) {
        $response = $item->result()->unwrap(); // canonical InferenceResponse
        // Upsert the application outcome by $key.
    } else {
        $failure = $item->result()->error(); // BatchItemFailure
        // Persist kind(), code(), and message() for this key.
    }
}
// @doctest id="2a5a"