PHP SDK errors and retries

<?php

use Telnyx\Core\Exceptions\APIConnectionException;
use Telnyx\Core\Exceptions\RateLimitException;
use Telnyx\Core\Exceptions\APIStatusException;

try {
  $numberOrder = $client->numberOrders->create();
} catch (APIConnectionException $e) {
  echo "The server could not be reached", PHP_EOL;
  var_dump($e->getPrevious());
} catch (RateLimitException $e) {
  echo "A 429 status code was received; we should back off a bit.", PHP_EOL;
} catch (APIStatusException $e) {
  echo "Another non-200-range status code was received", PHP_EOL;
  echo $e->getMessage();
}

<?php

use Telnyx\Client;

// Configure the default for all requests:
$client = new Client(requestOptions: ['maxRetries' => 0]);

// Or, configure per-request:
$result = $client->numberOrders->create(
  phoneNumbers: [['phoneNumber' => '+15558675309']],
  requestOptions: ['maxRetries' => 5],
);