diff -r 000000000000 -r 373ffda63c9a src/share/jaxws_classes/com/sun/xml/internal/xsom/XSModelGroup.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/jaxws_classes/com/sun/xml/internal/xsom/XSModelGroup.java	Wed Apr 27 01:27:09 2016 +0800
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.xml.internal.xsom;
+
+/**
+ * Model group.
+ *
+ * @author
+ *  Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
+ */
+public interface XSModelGroup extends XSComponent, XSTerm, Iterable<XSParticle>
+{
+    /**
+     * Type-safe enumeration for kind of model groups.
+     * Constants are defined in the {@link XSModelGroup} interface.
+     */
+    public static enum Compositor {
+        ALL("all"),CHOICE("choice"),SEQUENCE("sequence");
+
+        private Compositor(String _value) {
+            this.value = _value;
+        }
+
+        private final String value;
+        /**
+         * Returns the human-readable compositor name.
+         *
+         * @return
+         *      Either "all", "sequence", or "choice".
+         */
+        public String toString() {
+            return value;
+        }
+    }
+    /**
+     * A constant that represents "all" compositor.
+     */
+    static final Compositor ALL = Compositor.ALL;
+    /**
+     * A constant that represents "sequence" compositor.
+     */
+    static final Compositor SEQUENCE = Compositor.SEQUENCE;
+    /**
+     * A constant that represents "choice" compositor.
+     */
+    static final Compositor CHOICE = Compositor.CHOICE;
+
+    Compositor getCompositor();
+
+    /**
+     * Gets <i>i</i>-ith child.
+     */
+    XSParticle getChild(int idx);
+    /**
+     * Gets the number of children.
+     */
+    int getSize();
+
+    /**
+     * Gets all the children in one array.
+     */
+    XSParticle[] getChildren();
+}