diff -r 000000000000 -r 373ffda63c9a src/share/jaxws_classes/com/sun/xml/internal/xsom/impl/Ref.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/jaxws_classes/com/sun/xml/internal/xsom/impl/Ref.java	Wed Apr 27 01:27:09 2016 +0800
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 1997, 2011, 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.impl;
+
+import com.sun.xml.internal.xsom.XSAttGroupDecl;
+import com.sun.xml.internal.xsom.XSAttributeDecl;
+import com.sun.xml.internal.xsom.XSComplexType;
+import com.sun.xml.internal.xsom.XSContentType;
+import com.sun.xml.internal.xsom.XSElementDecl;
+import com.sun.xml.internal.xsom.XSIdentityConstraint;
+import com.sun.xml.internal.xsom.XSSimpleType;
+import com.sun.xml.internal.xsom.XSTerm;
+import com.sun.xml.internal.xsom.XSType;
+
+/**
+ * Reference to other schema components.
+ *
+ * <p>
+ * There are mainly two different types of references. One is
+ * the direct reference, which is only possible when schema components
+ * are already available when references are made.
+ * The other is the lazy reference, which keeps references by names
+ * and later look for the component by name.
+ *
+ * <p>
+ * This class defines interfaces that define the behavior of such
+ * references and classes that implement direct reference semantics.
+ *
+ * @author Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
+ */
+public abstract class Ref {
+
+    public static interface Term {
+        /** Obtains a reference as a term. */
+        XSTerm getTerm();
+    }
+
+    public static interface Type {
+        /** Obtains a reference as a type. */
+        XSType getType();
+    }
+
+    public static interface ContentType {
+        XSContentType getContentType();
+    }
+
+    public static interface SimpleType extends Ref.Type {
+        public XSSimpleType getType();
+    }
+
+    public static interface ComplexType extends Ref.Type {
+        public XSComplexType getType();
+    }
+
+    public static interface Attribute {
+        XSAttributeDecl getAttribute();
+    }
+
+    public static interface AttGroup {
+        XSAttGroupDecl get();
+    }
+
+    public static interface Element extends Term {
+        XSElementDecl get();
+    }
+
+    public static interface IdentityConstraint {
+        XSIdentityConstraint get();
+    }
+//
+//
+//    private static void _assert( boolean b ) {
+//        if(!b)
+//            throw new InternalError("assertion failed");
+//    }
+}