> ex 2024-01-21 fetch remote + decode
$dataContentRemote = $objData->retrieveRemote( $objRecordSource->getProductFeedUrl() );
if (!$dataContentRemote) :
    // no remote, disable source
    $objImporter->setSourceDisabled($sourceId);
elseif ( !$dataContent = $objData->parseJson( $dataContentRemote ) ) :
    // no data, disable source
    $objImporter->setSourceDisabled($sourceId);
else :
    if ( !empty( $feedRoot = $objRecordSource->getProductFeedRoot() ) ) {
        $dataContent = $dataContent->$feedRoot;
    }
> ex 2023-12-18
    foreach ($dataContent as $i => $node):
    
> ex 2024-01-21 chunking
    $iter = new \ArrayIterator($dataContent);
    unset($dataContent);
    //231219 - iter without chunks:     foreach($iter as $i => $node) :

    foreach(Utility::chunkIterator($iter, 100) as $chunk) :
    foreach($chunk as $i => $node) :

        [...]

    endforeach;
    unset($chunk);
    endforeach; //chunkIterator