def METHOD_NAME(self, j_stripping):
    """
    A private function to obtain the standard variables which
    can be derived from the lithum stripping interfacial reaction current
    Parameters
    ----------
    j_stripping : :class:`pybamm.Symbol`
        The net lithium stripping interfacial reaction current.
    Returns
    -------
    variables : dict
        The variables which can be derived from the plated lithium thickness.
    """
    # Set scales to one for the "no plating" model so that they are not required
    # by parameter values in general
    j_stripping_av = pybamm.x_average(j_stripping)
    variables = {
        "Lithium plating interfacial current density [A.m-2]": j_stripping,
        "X-averaged lithium plating "
        "interfacial current density [A.m-2]": j_stripping_av,
    }
    return variables