code: def _density_seaborn_(self, label=None, style=None, opts=None):
          
          try:
              fig = sns.kdeplot(self.df[self.x], self.df[self.y])
              fig = self._set_with_height(fig, opts)
              return fig
          except Exception as e:
              self.err(e, self.density_,
                       "Can not draw density chart")
docs: Returns a Seaborn density chart