instance method assume_migrated_upto_version

# File activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb, line 1037
      def assume_migrated_upto_version(version, migrations_paths)
        migrations_paths = Array(migrations_paths)
        version = version.to_i
        sm_table = quote_table_name(ActiveRecord::SchemaMigration.table_name)

        migrated = ActiveRecord::SchemaMigration.all_versions.map(&:to_i)
        versions = migration_context.migration_files.map do |file|
          migration_context.parse_migration_filename(file).first.to_i
        end

        unless migrated.include?(version)
          execute "INSERT INTO #{sm_table} (version) VALUES (#{quote(version)})"
        end

        inserting = (versions - migrated).select { |v| v < version }
        if inserting.any?
          if (duplicate = inserting.detect { |v| inserting.count(v) > 1 })
            raise "Duplicate migration #{duplicate}. Please renumber your migrations to resolve the conflict."
          end
          if supports_multi_insert?
            execute insert_versions_sql(inserting)
          else
            inserting.each do |v|
              execute insert_versions_sql(v)
            end
          end
        end
      end