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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 string2json(self, string):
 """Convert json into its string representation. Used for writing outputs to markdown."""

        kwargs = {
            'cls': BytesEncoder,  # use the IPython bytes encoder
            'indent': 1,
            'sort_keys': True,
            'separators': (',', ': '),
        }
        return cast_unicode(json.dumps(string, **kwargs), 'utf-8')