class RSpec::Core::Metadata

def initialize(superclass_metadata=nil)
  @superclass_metadata = superclass_metadata
  if @superclass_metadata
    update(@superclass_metadata)
    example_group = {:example_group => @superclass_metadata[:example_group]}
  end
  store(:example_group, example_group || {})
  store(:behaviour, self[:example_group])
  yield self if block_given?
end