(PHP 5, PHP 7)
COMPersistHelper::SaveToStream — Save object to stream
$stream
   ) : boolSaves an object to the specified stream.
stream
   Devuelve TRUE en caso de éxito o FALSE en caso de error.
  
A com_exception is thrown if the associated object does neither implement the COM interface IPersistStream nor IPersistStreamInit, or when calling the IPersistStream::Save() method failed.