    def get_args(self):
        """Return the arguments to be passed after self.cmd

        Doesn't expect shell expansion to happen.

        .. versionchanged:: 2.0
            Prior to 2.0, JupyterHub passed some options such as
            ip, port, and default_url to the command-line.
            JupyterHub 2.0 no longer builds any CLI args
            other than `Spawner.cmd` and `Spawner.args`.
            All values that come from jupyterhub itself
            will be passed via environment variables.
        """
        return self.args
Return the arguments to be passed after self.cmd

Doesn't expect shell expansion to happen.

.. versionchanged:: 2.0
Prior to 2.0, JupyterHub passed some options such as
ip, port, and default_url to the command-line.
JupyterHub 2.0 no longer builds any CLI args
other than `Spawner.cmd` and `Spawner.args`.
All values that come from jupyterhub itself
will be passed via environment variables.
jupyterhub/spawner.py