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

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]))