# File lib/xml/dom2/entityreference.rb, line 94
      def _checkNode(node)
        unless node.nodeType == ELEMENT_NODE ||
            node.nodeType == PROCESSING_INSTRUCTION_NODE ||
            node.nodeType == COMMENT_NODE ||
            node.nodeType == TEXT_NODE ||
            node.nodeType == CDATA_SECTION_NODE ||
            node.nodeType == ENTITY_REFERENCE_NODE
          raise DOMException.new(DOMException::HIERARCHY_REQUEST_ERR)
        end
      end