How to use the uamqp.authentication.SASTokenAuth.from_shared_access_key function in uamqp

try:
                expiry = int(parse_sas_token(token)['se'])
            except (KeyError, TypeError, IndexError):
                raise ValueError("Supplied SAS token has no valid expiry value.")
            return authentication.SASTokenAuth(
                self.auth_uri, self.auth_uri, token,
                expires_at=expiry,
                timeout=self.auth_timeout,
                http_proxy=self.http_proxy)

        username = username or self._auth_config['username']
        password = password or self._auth_config['password']
        if "@sas.root" in username:
            return authentication.SASLPlain(
                self.address.hostname, username, password, http_proxy=self.http_proxy)
        return authentication.SASTokenAuth.from_shared_access_key(
            self.auth_uri, username, password, timeout=self.auth_timeout, http_proxy=self.http_proxy)

def _build_handler(self):
        auth = None if self.connection else authentication.SASTokenAuth.from_shared_access_key(**self.auth_config)
        self._handler = AMQPClient(
            self.endpoint,
            auth=auth,
            debug=self.debug,
            properties=self.properties,
            error_policy=self.error_policy,
            encoding=self.encoding,
            **self.handler_kwargs)

def _build_handler(self):
        auth = None if self.connection else authentication.SASTokenAuth.from_shared_access_key(**self.auth_config)
        self._handler = SendClient(
            self.endpoint,
            auth=auth,
            debug=self.debug,
            properties=self.properties,
            client_name=self.name,
            error_policy=self.error_policy,
            encoding=self.encoding,
            **self.handler_kwargs)

:type username: str
        :param password: The shared access key.
        :type password: str
        """
        http_proxy = self.config.http_proxy
        transport_type = self.config.transport_type
        auth_timeout = self.config.auth_timeout

        # TODO: the following code can be refactored to create auth from classes directly instead of using if-else
        if isinstance(self.credential, EventHubSharedKeyCredential):
            username = username or self._auth_config['username']
            password = password or self._auth_config['password']
            if "@sas.root" in username:
                return authentication.SASLPlain(
                    self.host, username, password, http_proxy=http_proxy, transport_type=transport_type)
            return authentication.SASTokenAuth.from_shared_access_key(
                self.auth_uri, username, password, timeout=auth_timeout, http_proxy=http_proxy,
                transport_type=transport_type)

        elif isinstance(self.credential, EventHubSASTokenCredential):
            token = self.credential.get_sas_token()
            try:
                expiry = int(parse_sas_token(token)['se'])
            except (KeyError, TypeError, IndexError):
                raise ValueError("Supplied SAS token has no valid expiry value.")
            return authentication.SASTokenAuth(
                self.auth_uri, self.auth_uri, token,
                expires_at=expiry,
                timeout=auth_timeout,
                http_proxy=http_proxy,
                transport_type=transport_type)

def _build_handler(self):
        auth = None if self.connection else authentication.SASTokenAuth.from_shared_access_key(**self.auth_config)
        self._handler = ReceiveClient(
            self.endpoint,
            auth=auth,
            debug=self.debug,
            properties=self.properties,
            error_policy=self.error_policy,
            client_name=self.name,
            auto_complete=False,
            encoding=self.encoding,
            **self.handler_kwargs)

def _build_handler(self):
        auth = None if self.connection else authentication.SASTokenAuth.from_shared_access_key(**self.auth_config)
        self._handler = ReceiveClient(
            self._get_source(),
            auth=auth,
            debug=self.debug,
            properties=self.properties,
            error_policy=self.error_policy,
            client_name=self.name,
            on_attach=self._on_attach,
            auto_complete=False,
            encoding=self.encoding,
            **self.handler_kwargs)