# File lib/chef/cookbook_version.rb, line 892
    def self.available_versions(cookbook_name)
      chef_server_rest.get_rest("cookbooks/#{cookbook_name}")[cookbook_name]["versions"].map do |cb|
        cb["version"]
      end
    rescue Net::HTTPServerException => e
      if e.to_s =~ /^404/
        Chef::Log.error("Cannot find a cookbook named #{cookbook_name}")
        nil
      else
        raise
      end
    end