def create(title,primary_photo, description = nil)
primary_photo = primary_photo.id if
primary_photo.class == Flickr::Photo
args = { 'title' => title, 'primary_photo_id' =>
primary_photo}
args['description'] = description if description
res = @flickr.call_method('flickr.photosets.create',args)
id = res.elements['/photoset'].attributes['id']
url = res.elements['/photoset'].attributes['url']
set = Flickr::PhotoSet.new(id,@flickr)
set.title = title
set.url = url
@flickr.photoset_cache_store(set)
return set
end