def value(self, layer=None, view=None):
        """
        Extract the component value as an AttributeInfo object
        """
        cid = self.params.split('(')[-1][:-1]
        if layer is None:
            cid = layer.data.id[cid]
            return AttributeInfo.from_layer(layer, cid, view)
        return AttributeInfo.make(cid, [], None)
dataset/ETHPy150Open glue-viz/glue/glue/viewers/custom/qt/custom_viewer.py/FixedComponent.value/operator `is not` -> `is`