the parent of this DriveItem

        :return: Parent of this item
        :rtype: Drive or drive.Folder

def get_parent(self):
        """ the parent of this DriveItem

        :return: Parent of this item
        :rtype: Drive or drive.Folder
        """
        if self._parent and self._parent.object_id == self.parent_id:
            return self._parent
        else:
            if self.parent_id:
                return self.drive.get_item(self.parent_id)
            else:
                # return the drive
                return self.drive