code: def do_rotation(self, mirror, rot):
          
          if (mirror):
              raise IIIFError(code=501, parameter="rotation",
                              text="Null manipulator does not support mirroring.")
          if (rot != 0.0):
              raise IIIFError(code=501, parameter="rotation",
                              text="Null manipulator supports only rotation=(0|360).")
docs: Null implementation of rotate and/or mirror.