# File lib/rss/atom.rb, line 13
13:       def self.append_features(klass)
14:         super
15:         klass.install_must_call_validator("atom", URI)
16:         [
17:          ["lang", :xml],
18:          ["base", :xml],
19:         ].each do |name, uri, required|
20:           klass.install_get_attribute(name, uri, required, [nil, :inherit])
21:         end
22:         klass.class_eval do
23:           class << self
24:             def required_uri
25:               URI
26:             end
27: 
28:             def need_parent?
29:               true
30:             end
31:           end
32:         end
33:       end

    # File lib/rss/atom.rb, line 28
28:             def need_parent?
29:               true
30:             end

    # File lib/rss/atom.rb, line 24
24:             def required_uri
25:               URI
26:             end