/*
 * Copyright 2014 Attila Szegedi, Daniel Dekany, Jonathan Revusky
 * 
 * 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 freemarker.core;

import freemarker.template.Configuration;
import freemarker.template.Version;

/**
 * An object that has another older version that's used below a certain
 * {@link Configuration#setIncompatibleImprovements(Version) InCompatible Improvements} version.  
 */
interface ICIChainMember {

    /**
     * The minimum ICE version after which this object can be used.
     */
    int getMinimumICIVersion();

    /**
     * The closest object used for ICE lower than {@link #getMinimumICIVersion()}.
     */
    Object getPreviousICIChainMember();
    
}
