code: def addlabel(ax=None, toplabel=None, xlabel=None, ylabel=None, zlabel=None, clabel=None, cb=None, windowlabel=None, fig=None, axes=None):
      
  
      if (axes is None) and (ax is not None):
          axes = ax
  
      if (windowlabel is not None) and (fig is not None):
          fig.canvas.set_window_title(windowlabel)
  
      if fig is None:
          fig = _plt.gcf()
  
      if fig is not None and axes is None:
          axes = fig.get_axes()
          if axes == []:
              logger.error('No axes found!')
  
      if axes is not None:
          if toplabel is not None:
              axes.set_title(toplabel)
          if xlabel is not None:
              axes.set_xlabel(xlabel)
          if ylabel is not None:
              axes.set_ylabel(ylabel)
          if zlabel is not None:
              axes.set_zlabel(zlabel)
  
      if (clabel is not None) or (cb is not None):
          if (clabel is not None) and (cb is not None):
              cb.set_label(clabel)
          else:
              if clabel is None:
                  logger.error('Missing colorbar label')
              else:
                  logger.error('Missing colorbar instance')
docs: Adds labels to a plot.