code: def add_image(self, filename, *, width=NoEscape(r'0.8\textwidth'),
                    placement=NoEscape(r'\centering')):
          
  
          if width is not None:
              if self.escape:
                  width = escape_latex(width)
  
              width = 'width=' + str(width)
  
          if placement is not None:
              self.append(placement)
  
          self.append(StandAloneGraphic(image_options=width,
                                        filename=fix_filename(filename)))
docs: Add an image to the figure.
  
          Args
          ----
          filename: str
              Filename of the image.
          width: str
              The width of the image
          placement: str
              Placement of the figure, `None` is also accepted.