code: def _draw_facet_labels(self):
          
          # Decorate the axes
          #   - xaxis & yaxis breaks, labels, limits, ...
          #   - facet labels
          #
          # pidx is the panel index (location left to right, top to bottom)
          for pidx, layout_info in self.layout.layout.iterrows():
              panel_params = self.layout.panel_params[pidx]
              self.facet.set_breaks_and_labels(
                  panel_params, layout_info, pidx)
              self.facet.draw_label(layout_info, pidx)
docs: Draw facet labels a.k.a strip texts