# File lib/rspec/core/shared_example_group.rb, line 5
      def shared_context(*args, &block)
        if String === args.first || Symbol === args.first
          name = args.shift
          ensure_shared_example_group_name_not_taken(name)
          RSpec.world.shared_example_groups[name] = block
        end

        unless args.empty?
          mod = Module.new
          (class << mod; self; end).send(:define_method, :extended) do |host|
            host.class_eval(&block)
          end
          RSpec.configuration.extend(mod, *args)
        else
        end
      end