Adds the dropped test *item* into the protocol list.

        Re-implemented from :meth:`AbstractDragView<sparkle.gui.abstract_drag_view.AbstractDragView.dropped>`

def dropped(self, item, event):
        """Adds the dropped test *item* into the protocol list.

        Re-implemented from :meth:`AbstractDragView<sparkle.gui.abstract_drag_view.AbstractDragView.dropped>`
        """
        location = self.rowAt(event.pos().y())

        if isinstance(item, StimFactory):
            factory = item
            # create new stimulus then!
            stim = factory.create()
            if stim is not None:
                self.model().insertTest(stim, location)
        elif event.source() == self:
            self.model().insertTest(item, location)