docs: def eth_submitWork(self, nonce, header, mix_digest):
          """https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_submitwork
  
          :param nonce: Nonce of work
          :type nonce: int
  
          :param header: Pow-hash header
          :type header: str
  
          :param mix_digest: Mix digest
          :type mix_digest: str
  
          :return: success
          :rtype: bool
          """
          return (yield from self.rpc_call('eth_submitWork',
                                           [nonce, header, mix_digest]))