code: def enhance(self, inverse=False, gamma=1.0, stretch="no",
                  stretch_parameters=None, **kwargs):
          
          self.invert(inverse)
          if stretch_parameters is None:
              stretch_parameters = {}
  
          stretch_parameters.update(kwargs)
          self.stretch(stretch, **stretch_parameters)
          self.gamma(gamma)
docs: Image enhancement function. It applies **in this order** inversion,
          gamma correction, and stretching to the current image, with parameters
          *inverse* (see :meth:`Image.invert`), *gamma* (see
          :meth:`Image.gamma`), and *stretch* (see :meth:`Image.stretch`).