class RSpec::Core::ExampleGroup

def self.set_it_up(*args)
  @metadata = RSpec::Core::Metadata.new(superclass_metadata).process(*args)
  world.find_modules(self).each do |include_or_extend, mod, opts|
    send(include_or_extend, mod) unless mixins[include_or_extend].include?(mod)
  end
end