docs: def get_n_config_to_keep_for_iteration(self, iteration, bracket_iteration):
          """Return the number of configs to keep for an iteration and iteration bracket.
  
          This is just util function around `get_n_config_to_keep`
          """
          bracket = self.get_bracket(iteration=iteration)
          if bracket_iteration == bracket + 1:
              # End of loop `for bracket_iteration in range(bracket + 1):`
              return 0
  
          n_configs = self.get_n_configs(bracket=bracket)
          return self.get_n_config_to_keep(
              n_suggestions=n_configs, bracket_iteration=bracket_iteration)