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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 block_stat(self, multihash, **kwargs):
 """Returns a dict with the size of the block with the given hash. .. code-block:: python {'Key': 'QmTkzDwWqPbnAh5YiV5VwcTLnGdwSNsNTn2aDxdXBFca7D', 'Size': 258} Parameters multihash : str The base58 multihash of an existing block to stat Returns ------- dict : Information about the requested block """

        args = (multihash,)
        return self._client.request('/block/stat', args,
                                    decoder='json', **kwargs)