# File lib/iq_rdf/uri.rb, line 51
    def build_xml(xml, &block)
      if (is_subject?)
        attrs = {"rdf:about" => self.full_uri}
        attrs["xml:lang"] = self.lang if self.lang
        xml.rdf(:Description, attrs) do
          if self.rdf_type
            xml.rdf(:type, "rdf:resource" => self.rdf_type.full_uri)
          end
          self.nodes.each do |predicate|
            predicate.build_xml(xml)
          end
        end
      elsif block
        block.call("rdf:resource" => self.full_uri)
      end
    end