instance method invert_change_column_default

# File activerecord/lib/active_record/migration/command_recorder.rb, line 259
        def invert_change_column_default(args)
          table, column, options = args

          unless options.is_a?(Hash) && options.has_key?(:from) && options.has_key?(:to)
            raise ActiveRecord::IrreversibleMigration, "change_column_default is only reversible if given a :from and :to option."
          end

          [:change_column_default, [table, column, from: options[:to], to: options[:from]]]
        end