def get_class_qualname(cls):
    """
    Give a fully qualified name for a class (and therefore a function ref as
    well). Example: 'combtest.action.Action'.

    Note:
        Python3 has this, or something like it, called ``__qualname__``. We
        implement our own here to retain control of it, and give us Python2
        compat.
    """
    return cls.__module__ + "." + cls.__name__