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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.
*/
package org.apache.commons.functor;
/**
* Functor marker interface. All provided functor interfaces extend this interface.
* <p>
* While not strictly required,
* it is <em>encouraged</em> that functor implementations:
* <ul>
* <li>Implement {@link java.io.Serializable Serializable}</li>
* <li>Override {@link java.lang.Object#equals(java.lang.Object)}</li>
* <li>Override {@link java.lang.Object#hashCode()}</li>
* <li>Override {@link java.lang.Object#toString()}</li>
* </ul>
* </p>
*
* @since 1.0
* @version $Revision$ $Date$
*/
public interface Functor {
}