/**
  * Override the constructor to always force S3 sources to not be streams.
  *
  * {@inheritDoc}
  *
  * @param xPDO $xpdo
  */
 public function __construct(xPDO &$xpdo)
 {
     parent::__construct($xpdo);
     $this->set('is_stream', false);
 }
 /**
  * Override the constructor to always force Dropbox sources not to be streams
  * @param xPDO $xpdo
  */
 public function __construct(xPDO &$xpdo)
 {
     parent::__construct($xpdo);
     $this->set('is_stream', false);
     $this->xpdo->lexicon->load('dropbox:default');
 }