docs: 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})