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diff --git a/awt/javax/imageio/spi/RegisterableService.java b/awt/javax/imageio/spi/RegisterableService.java
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+++ b/awt/javax/imageio/spi/RegisterableService.java
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+/*
+ *  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.
+ */
+/**
+ * @author Rustem V. Rafikov
+ * @version $Revision: 1.3 $
+ */
+package javax.imageio.spi;
+
+/**
+ * The RegisterableService interface provides service provider 
+ * objects that can be registered by a ServiceRegistry, and 
+ * notifications that registration and deregistration have been
+ * performed.
+ */
+public interface RegisterableService {
+    
+    /**
+     * This method is called when the object which implements this
+     * interface is registered to the specified category of the 
+     * specified registry.
+     * 
+     * @param registry the ServiceRegistry to be registered.
+     * @param category the class representing a category.
+     */
+    void onRegistration(ServiceRegistry registry, Class<?> category);
+    
+    /**
+     * This method is called when the object which implements this
+     * interface is deregistered to the specified category of the 
+     * specified registry.
+     * 
+     * @param registry the ServiceRegistry to be registered.
+     * @param category the class representing a category.
+     */
+    void onDeregistration(ServiceRegistry registry, Class<?> category);
+}