def netmiko_fun(fun, *args, **kwargs):
    '''
    .. versionadded:: 2019.2.0

    Call an arbitrary function from the :mod:`Netmiko<salt.modules.netmiko_mod>`
    module, passing the authentication details from the existing NAPALM
    connection.

    fun
        The name of the function from the :mod:`Netmiko<salt.modules.netmiko_mod>`
        to invoke.

    args
        List of arguments to send to the execution function specified in
        ``fun``.

    kwargs
        Key-value arguments to send to the execution function specified in
        ``fun``.

    CLI Example:

    .. code-block:: bash

        salt '*' napalm.netmiko_fun send_command 'show version'
    '''
    if 'netmiko.' not in fun:
        fun = 'netmiko.{fun}'.format(fun=fun)
    netmiko_kwargs = netmiko_args()
    kwargs.update(netmiko_kwargs)
    return __salt__[fun](*args, **kwargs)