docs: def setup_colorbars(self, plot_call_sign):
          """Setup colorbars for each type of plot.
  
          Take all of the optional performed during ``__init__`` method and makes the colorbar.
  
          Args:
              plot_call_sign (obj): Plot instance of ax.contourf with colormapping to
                  add as a colorbar.
  
          """
          self.fig.colorbar(plot_call_sign, cax=self.cbar_ax,
                            ticks=self.cbar_ticks, orientation=self.cbar_orientation)
          # setup colorbar ticks
          (getattr(self.cbar_ax, 'set_' + self.cbar_var + 'ticklabels')
              (self.cbar_tick_labels, fontsize=self.cbar_ticks_fontsize))
          (getattr(self.cbar_ax, 'set_' + self.cbar_var + 'label')
              (self.cbar_label, fontsize=self.cbar_label_fontsize, labelpad=self.cbar_label_pad))
  
          return