def set_insetlabels(self, inset=None):
<EOL>self._insetlabels = not self._insetlabels if inset is None else inset<EOL>
Set the labels to be inset or not

        Parameters
        ----------
        inset : `bool`, `None`
            if `None`, toggle the inset state, otherwise set the labels to
            be inset (`True) or not (`False`)