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/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* 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.
*/
/* $Id$ */
package org.apache.fop.fo.expr;
import org.apache.fop.datatypes.PercentBase;
/**
* Abstract Base class for XSL-FO functions
*/
public abstract class FunctionBase implements Function {
/**
* @return null (by default, functions have no percent-based arguments)
*/
public PercentBase getPercentBase() {
return null;
}
}
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