'Automatically adjust image contrast and color levels.
This is similar to the "I\'m Feeling Lucky" button in Picasa.
Raises:
BadRequestError if MAX_TRANSFORMS_PER_REQUEST transforms have already
been requested for this image.'

def im_feeling_lucky(self):

    self._check_transform_limits()
    transform = images_service_pb.Transform()
    transform.set_autolevels(True)
    self._transforms.append(transform)
