code: def plot_chempot_range_map(self, elements, referenced=True):
          
          self.get_chempot_range_map_plot(elements, referenced=referenced).show()
docs: 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.