Imbo try/catch with imageExists

gistfile1.php

<?php
$fileName = 'someImage.png';

try {
    if ($imbo->imageExists($fileName)) {
        $photoHash = $imbo->getImageIdentifier($fileName);
    } else {
        $response  = $imbo->addImage($fileName);
        $photoHash = $response->getImageIdentifier();
    }

    echo 'Image available at ' . $imbo->getImageUrl($photoHash)->jpg() . PHP_EOL;
} catch (ImboClient\Exception $e) {
    echo 'Failed to add image: ' . $e->getMessage());
}