diff -r 9653470b7294 -r a535e674d50d src/java.xml.crypto/share/classes/org/jcp/xml/dsig/internal/dom/BaseStructure.java
--- a/src/java.xml.crypto/share/classes/org/jcp/xml/dsig/internal/dom/BaseStructure.java	Fri Sep 07 07:52:35 2018 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,49 +0,0 @@
-/*
- * reserved comment block
- * DO NOT REMOVE OR ALTER!
- */
-/**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied. See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-package org.jcp.xml.dsig.internal.dom;
-
-import javax.xml.crypto.XMLStructure;
-
-import org.w3c.dom.Node;
-
-public abstract class BaseStructure implements XMLStructure {
-
-    /**
-     * Just return the text of the immediate child of a node.
-     *
-     * @param node
-     * @return the text of a Node
-     */
-    public static String textOfNode(Node node) {
-        return node.getFirstChild().getNodeValue();
-    }
-
-    public final boolean isFeatureSupported(String feature) {
-        if (feature == null) {
-            throw new NullPointerException();
-        } else {
-            return false;
-        }
-    }
-
-}