def METHOD_NAME(self, org_model):
    """
    Test that we cannot copy to an existing model.
    """
    try:
        org_name = nest.GetDefaults(org_model)["model"]
    except KeyError:
        org_name = nest.GetDefaults(org_model)["synapse_model"]
    with pytest.raises(nest.kernel.NESTError, match="NewModelNameExists"):
        nest.CopyModel(org_model, org_model)