getSquareItems not filtering types

[BarnumD]

In the following example, listCatalog is not filtering by types, such as ITEM.'

function getSquareCatalog($types = 'ITEM'){
  $client = getApiClient();
  $catalogApi = $client->getCatalogApi();
  $cursor = 'initial';
  $catalog = array();

  while ($cursor){
    if ($cursor == 'initial'){$cursor = null;}
    $apiResponse = $catalogApi->listCatalog($cursor, $types);

    if ($apiResponse->isSuccess()) {
      $listCatalogResponse = $apiResponse->getResult();
      $catalog= array_merge ($catalog, $listCatalogResponse->getObjects());

      $cursor = $listCatalogResponse->getCursor();
    }
  }
  return $catalog;
}

print("<pre>".print_r(getSquareCatalog(),true)."</pre>");

Returns all item types including ITEM, CATEGORY, TAX, DISCOUNT

[BarnumD]

User issue, failed to realize I was calling getSquareCatalog() with null argument.