Marks view for repaint. :qtdoc:`Re-implemented<QAbstractItemView.rowsAboutToBeRemoved>`

def rowsAboutToBeRemoved(self, parent, start, end):
        """Marks view for repaint. :qtdoc:`Re-implemented<QAbstractItemView.rowsAboutToBeRemoved>`"""
        self._viewIsDirty = True
        super(StimulusView, self).rowsAboutToBeRemoved(parent, start, end)