Plot the chemical potential range _map. Currently works only for
        3-component PDs.

        Args:
            elements: Sequence of elements to be considered as independent
                variables. E.g., if you want to show the stability ranges of
                all Li-Co-O phases wrt to uLi and uO, you will supply
                [Element("Li"), Element("O")]
            referenced: if True, gives the results with a reference being the
                        energy of the elemental phase. If False, gives absolute values.

def plot_chempot_range_map(self, elements, referenced=True):
        """
        Plot the chemical potential range _map. Currently works only for
        3-component PDs.

        Args:
            elements: Sequence of elements to be considered as independent
                variables. E.g., if you want to show the stability ranges of
                all Li-Co-O phases wrt to uLi and uO, you will supply
                [Element("Li"), Element("O")]
            referenced: if True, gives the results with a reference being the
                        energy of the elemental phase. If False, gives absolute values.
        """
        self.get_chempot_range_map_plot(elements, referenced=referenced).show()