to_type_uris (OpenID::AX)

    # File lib/openid/extensions/ax.rb, line 97
        def self.to_type_uris(namespace_map, alias_list_s)
          return [] if alias_list_s.nil?
          alias_list_s.split(',').inject([]) {|uris, name|
            type_uri = namespace_map.get_namespace_uri(name)
            raise IndexError, "No type defined for attribute name #{name.inspect}" if type_uri.nil?
            uris << type_uri
          }
        end