class AWS::EC2::ImageCollection

def each &block
  opts = {}
  opts[:owners] = @owners.map { |id| id.to_s } unless @owners.empty?
  opts[:executable_users] = @executable_users.map { |id| id.to_s } unless
    @executable_users.empty?
  response = filtered_request(:describe_images, opts)
  response.images_set.each do |i|
    image = Image.new_from(:describe_images, i, i.image_id, :config => config)
    yield(image)
  end
  nil
end