code: def identify_axes(ax_dict, fontsize=48):
      """
      Helper to identify the Axes in the examples below.
  
      Draws the label in a large font in the center of the Axes.
  
      Parameters
      ----------
      ax_dict : dict[str, Axes]
          Mapping between the title / label and the Axes.
      fontsize : int, optional
          How big the label should be.
      """
      kw = dict(
          ha="center", va="center", fontsize=fontsize, color="darkgrey"
      )
      for k, ax in ax_dict.items():
          ax.text(0.5, 0.5, k, transform=ax.transAxes, **kw)
  
label_desc: Use image node_id 1 for calling a global function with example usage: identify_axes(ax_dict, fontsize) without return types