rollback(migrations_path, steps=1) public

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# File activerecord/lib/active_record/migration.rb, line 383
      def rollback(migrations_path, steps=1)
        migrator = self.new(:down, migrations_path)
        start_index = migrator.migrations.index(migrator.current_migration)
        return unless start_index
        finish = migrator.migrations[start_index + steps]
        down(migrations_path, finish ? finish.version : 0)
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