<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def crop(self, *args, **kwargs):
 """Crop the multiscene and return a new cropped multiscene."""

        return self._generate_scene_func(self._scenes, 'crop', True, *args, **kwargs)