item = HN2JSON.find 4623690 NoMethodError: undefined method `url=' for #<HN2JSON::Entity:0x007fb84cd63a88> from /Users/markburns/.rvm/gems/ruby-1.9.3-p194/gem

item = HN2JSON.find 4623690 NoMethodError: undefined method `url=' for #<HN2JSON::Entity:0x007fb84cd63a88> from /Users/markburns/.rvm/gems/ruby-1.9.3-p194/gems/hn2json-0.0.4/lib/hn2json/parser.rb:92:in `block in get_attrs_post' from /Users/markburns/.rvm/gems/ruby-1.9.3-p194/gems/hn2json-0.0.4/lib/hn2json/entity.rb:92:in `add_attrs' from /Users/markburns/.rvm/gems/ruby-1.9.3-p194/gems/hn2json-0.0.4/lib/hn2json/parser.rb:91:in `get_attrs_post' from /Users/markburns/.rvm/gems/ruby-1.9.3-p194/gems/hn2json-0.0.4/lib/hn2json/entity.rb:71:in `get_attrs' from /Users/markburns/.rvm/gems/ruby-1.9.3-p194/gems/hn2json-0.0.4/lib/hn2json/entity.rb:56:in `initialize' from /Users/markburns/.rvm/gems/ruby-1.9.3-p194/gems/hn2json-0.0.4/lib/hn2json.rb:35:in `new' from /Users/markburns/.rvm/gems/ruby-1.9.3-p194/gems/hn2json-0.0.4/lib/hn2json.rb:35:in `find'