docs: def bbox(self, outname=None, format='ESRI Shapefile', overwrite=True):
          """
          Parameters
          ----------
          outname: str or None
              the name of the file to write; If `None`, the bounding box is returned as vector object
          format: str
              The file format to write
          overwrite: bool
              overwrite an already existing file?
  
          Returns
          -------
          Vector or None
              the bounding box vector object
          """
          if outname is None:
              return bbox(self.geo, self.proj4)
          else:
              bbox(self.geo, self.proj4, outname=outname, format=format, overwrite=overwrite)