def close(self):
        """ Is called before destruction. Can be used to clean-up resources
            Could be called 'finalize' but PlotItem already has a close so we reuse that.
        """
        logger.debug("Finalizing: {}".format(self))
        super(ArgosPgPlotItem, self).close()
Is called before destruction. Can be used to clean-up resources
            Could be called 'finalize' but PlotItem already has a close so we reuse that.