record_version_state_after_migrating

# File activerecord/lib/active_record/migration.rb, line 1559
      def record_version_state_after_migrating(version)
        if down?
          migrated.delete(version)
          @schema_migration.delete_version(version.to_s)
        else
          migrated << version
          @schema_migration.create_version(version.to_s)
        end
      end