EmptyTrash Method
Permanently deletes all of the current user's trashed files.
Object Oriented Interface
public function doEmptyTrash();
Procedural Interface
ipworkscloud_googledrive_do_emptytrash($res);
Remarks
This method permanently deletes all of the current user's trashed files by emptying the trash for their "My Drive".
It is not possible to recover trashed files after this method is called!