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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 add_json(self, json_obj, **kwargs):
 """Adds a json-serializable Python dict as a json file to IPFS. .. code-block:: python 'QmVz9g7m5u3oHiNKHj2CJX1dbG1gtismRS3g9NaPBBLbob' Parameters json_obj : dict A json-serializable Python dictionary Returns ------- str : Hash of the added IPFS object """

        return self.add_bytes(encoding.Json().encode(json_obj), **kwargs)