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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def crop(self, image, size, crop, options):
 """ Wrapper for ``engine_crop``, will return without calling ``engine_crop`` if crop is None. :param image: :param size: :param crop: :param options: :return: """

        if not crop:
            return image
        return self.engine_crop(image, size, crop, options)