docs: def poof(self, outdir=None, ext=".pdf", **kwargs):
          """
          A single entry point to rendering all visualizations in the visual
          pipeline. The rendering for the output depends on the backend context,
          but for path based renderings (e.g. saving to a file), specify a
          directory and extension to compse an outpath to save each
          visualization (file names will be based on the  named step).
  
          Parameters
          ----------
          outdir : path
              The directory to save visualizations to.
  
          ext : string, default = ".pdf"
              The extension of the file to save the visualization to.
  
          kwargs : dict
              Keyword arguments to pass to the ``poof()`` method of all steps.
          """
          for name, step in self.visual_steps.items():
              if outdir is not None:
                  outpath = path.join(outdir, slugify(name) + ext)
              else:
                  outpath = None
  
              step.poof(outpath=outpath, **kwargs)