def normalize_option_value(value)
      case value
      when Array
        value.map { |option| normalize_option_value(option) }.join(",")
      else
        value.to_s
      end
    end
def normalize_option_value(value)
      case value
      when Array
        value.map { |option| normalize_option_value(option) }.join(",")
      else
        value.to_s
      end
    end
Recursively normalize options.