Add a frequency that will be displayed on the variant level

            Args:
                name (str): The name of the frequency field

def add_frequency(self, name, value):
        """Add a frequency that will be displayed on the variant level

            Args:
                name (str): The name of the frequency field
        """
        logger.debug("Adding frequency {0} with value {1} to variant {2}".format(
            name, value, self['variant_id']))
        self['frequencies'].append({'label': name, 'value': value})