Resource "package", attribute "package_name" doesnt work as expected

[philicious]

According to http://docs.chef.io/release/11-16/resource_package.html and http://docs.chef.io/release/11-16/resource_apt_package.html

you should be able to specify an array for package_name, however I get an error

 Chef::Exceptions::ValidationFailed
  ----------------------------------
  Option package_name must be a kind of [String]!  You passed ["python-openssl", "libnl-3-200", "libnl-route-3-200", "python-dbus", "python-apt", "python-newt", "python-gudev", "python-dmidecode", "python-libxml2"].

Recipe

package 'install-spacewalk-deps' do
  package_name %w(python-openssl libnl-3-200 libnl-route-3-200 python-dbus
                  python-apt python-newt python-gudev python-dmidecode python-libxml2)
end

chef-client -v
Chef: 11.16.4

This is working fine with chef-client 12.x

[coderanger]

Multi-package installs were added in 12.1.0.

[philicious]

then the docs need updates because they clearly say arrays are supported for 11.x
http://docs.chef.io/release/11-16/resource_package.html
http://docs.chef.io/release/11-16/resource_apt_package.html