# File lib/spec/example/example_group_factory.rb, line 53
        def default(example_group_class)
          Spec.__send__ :remove_const, :ExampleGroup if Spec.const_defined?(:ExampleGroup)
          Spec.const_set(:ExampleGroup, example_group_class)
          old = @example_group_types
          @example_group_types = Hash.new(example_group_class)
          @example_group_types.merge!(old) if old
        end