# File lib/validates_timeliness/active_record/multiparameter_attributes.rb, line 24
      def extract_date_from_multiparameter_attributes(values)
        year = values[0].blank? ? nil : ValidatesTimeliness::Formats.unambiguous_year(values[0].rjust(2, "0"))
        [year, *values.slice(1, 2).map { |s| s.blank? ? nil : s.rjust(2, "0") }].join("-")
      end