<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def block_get(self, multihash, **kwargs):
 r"""Returns the raw contents of a block. .. code-block:: python b'\x121\n"\x12 \xdaW>\x14\xe5\xc1\xf6\xe4\x92\xd1 … \n\x02\x08\x01' Parameters multihash : str The base58 multihash of an existing block to get Returns ------- str : Value of the requested block """

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