(PHP 5, PHP 7, PHP 8)
COMPersistHelper::SaveToStream — Save object to stream
$stream): boolSaves an object to the specified stream.
stream
   Cette fonction retourne true en cas de succès ou false si une erreur survient.
  
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.