container-search/src/main/java/com/yahoo/search/yql/OperatorVisitor.java


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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.yql;

interface OperatorVisitor {

    <T extends Operator> boolean enter(OperatorNode<T> node);

    <T extends Operator> void exit(OperatorNode<T> node);

}