public function __construct($fileName, $isDataStream = false)
{
$this->imported = array();
$this->importedFunctions = array();
$this->errorMessage = null;
$this->hasError = false;
$this->fileName = $fileName;
$this->remoteImage = false;
$this->isDataStream = $isDataStream;
$this->fileExistsAndReadable();
}