method_missing

# File activerecord/lib/active_record/migration.rb, line 455
    def method_missing(method, *arguments, &block)
      arg_list = arguments.map{ |a| a.inspect } * ', '

      say_with_time "#{method}(#{arg_list})" do
        unless reverting?
          unless arguments.empty? || method == :execute
            arguments[0] = Migrator.proper_table_name(arguments.first) unless method == :assume_migrated_upto_version
            arguments[1] = Migrator.proper_table_name(arguments.second) if method == :rename_table
          end
        end
        return super unless connection.respond_to?(method)
        connection.send(method, *arguments, &block)
      end
    end