class AWS::EC2::ReservedInstancesOfferingCollection

def each &block
  response = filtered_request(:describe_reserved_instances_offerings)
  response.reserved_instances_offerings_set.each do |item|
    reserved_instance_offering = ReservedInstancesOffering.new_from(
      :describe_reserved_instances_offerings, item, 
      item.reserved_instances_offering_id, :config => config)
    yield(reserved_instance_offering)
  end
end