Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Xml/System/Xml/Schema/XmlSchemaAttributeGroupref.cs

@@ -0,0 +1,31 @@
+//------------------------------------------------------------------------------
+// <copyright file="XmlSchemaAttributeGroupRef.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright> 
+// <owner current="true" primary="true">[....]</owner>                                                               
+//------------------------------------------------------------------------------
+
+namespace System.Xml.Schema {
+
+    using System.Collections;
+    using System.Xml.Serialization;
+
+    /// <include file='doc\XmlSchemaAttributeGroupRef.uex' path='docs/doc[@for="XmlSchemaAttributeGroupRef"]/*' />
+    /// <devdoc>
+    ///    <para>[To be supplied.]</para>
+    /// </devdoc>
+    public class XmlSchemaAttributeGroupRef : XmlSchemaAnnotated {
+        XmlQualifiedName refName = XmlQualifiedName.Empty; 
+
+        /// <include file='doc\XmlSchemaAttributeGroupRef.uex' path='docs/doc[@for="XmlSchemaAttributeGroupRef.RefName"]/*' />
+        /// <devdoc>
+        ///    <para>[To be supplied.]</para>
+        /// </devdoc>
+        [XmlAttribute("ref")]
+        public XmlQualifiedName RefName { 
+            get { return refName; }
+            set { refName = (value == null ? XmlQualifiedName.Empty : value); }
+        }
+    }
+
+}