# File lib/dm-migrations/adapters/dm-oracle-adapter.rb, line 314
        def auto_migrate_with(value = :not_specified)
          return @auto_migrate_with if value == :not_specified
          value = nil if value == :drop_and_create
          raise ArgumentError unless [nil, :truncate, :delete].include?(value)
          @auto_migrate_with = value
        end