Renders knobs in table
        :return:

def get_knob_defaults_as_table(cls):
        """
        Renders knobs in table
        :return:
        """

        knob_list = [
            {
                'Knob': name,
                'Description': cls.get_registered_knob(name).description,
                'Default': cls.get_registered_knob(name).default
            } for name in sorted(cls._register.keys())
        ]
        return tabulate.tabulate(knob_list, headers='keys', tablefmt='fancy_grid')