def _saveOptions(self):
        """Should never be called. Call filterchanged() or close() instead,
        which will then call this.
        :return:
        """
        if self.filterOptionsPanel is not None:
            options = {}
            options.update(self.filterOptionsPanel.options)
            options.pop("", "")
            self.tool.savedOptions[self.selectedName] = options
Should never be called. Call filterchanged() or close() instead,
        which will then call this.
        :return:
        
editortools/filter.py