    # File lib/active_record/fixtures.rb, line 839
          def fixtures(*table_names)
            if table_names.first == :all
              table_names = Dir["#{fixture_path}/*.yml"] + Dir["#{fixture_path}/*.csv"]
              table_names.map! { |f| File.basename(f).split('.')[0..-2].join('.') }
            else
              table_names = table_names.flatten.map { |n| n.to_s }
            end

            self.fixture_table_names |= table_names
            require_fixture_classes(table_names)
            setup_fixture_accessors(table_names)
          end