public static function run($dataDir = null)
{
# Create instance of Diagram
$diagram = new Diagram($dataDir . "drawing.vsd");
# remove all macros
$diagram->setVbProjectData(null);
# Save as VDX
$saveFileFormat = new SaveFileFormat();
$diagram->save($dataDir . "RemoveAllMacros.vdx", $saveFileFormat->VDX);
print "Removed all macros from diagram successfully!" . PHP_EOL;
}