@asyncio.coroutine<EOL><INDENT>def personal_newAccount(self, passphrase=None):<DEDENT>
return (yield from self.rpc_call('<STR_LIT>', [passphrase]))<EOL>
https://github.com/ethereum/go-ethereum/wiki/Management-APIs#personal_newaccount

        :param passphrase: Passphrase of account (optional)
        :type passphrase: str

        :return: address
        :rtype: str