content: /*
   * Copyright (c) OSGi Alliance (2016). All Rights Reserved.
   * 
   * Licensed 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.osgi.util.function;
  
  import org.osgi.annotation.versioning.ConsumerType;
  
  /**
   * A callback that performs an operation and may throw an exception.
   * <p>
   * This is a functional interface and can be used as the assignment target for a
   * lambda expression or method reference.
   * 
   * @ThreadSafe
   * @since 1.1
   * @author $Id: 17ff376bc9c8c171caad89eb9d0bc496f46961ee $
   */
  @ConsumerType
  @FunctionalInterface
  public interface Callback {
  	/**
  	 * Execute the callback.
  	 * 
  	 * @throws Exception An exception thrown by the method.
  	 */
  	void run() throws Exception;
  }
  