#    attr_accessor :id           # string
#    attr_accessor :title        # Atom::Text
#    attr_accessor :subtitle     # Atom::Text
#    attr_accessor :updated      # string
#    attr_accessor :rights       # string
#    attr_accessor :icon         # uri
#    attr_accessor :logo         # uri
#    attr_accessor :entries      # array of Atom::Entry
#    attr_accessor :authors      # array of Atom::Person
#    attr_accessor :contributors # array of Atom::Person
#    attr_accessor :generator    # Atom::Generator
#    attr_accessor :links        # array of Atom::Link
#    attr_accessor :categories   # array of Atom::Category
#    attr_accessor :extensions   # array of Atom::Extension