/* ====================================================================   Copyright 2003-2004   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.==================================================================== */package org.apache.poi.hssf.record.formula;import org.apache.poi.hssf.model.Workbook;/** * * @author  andy * @author Jason Height (jheight at chariot dot net dot au) */public class UnknownPtg    extends Ptg{    private short size;    /** Creates new UnknownPtg */    public UnknownPtg()    {    }    public UnknownPtg(byte [] data, int offset)    {        // doesn't need anything    }    public void writeBytes(byte [] array, int offset)    {    }    public int getSize()    {        return size;    }    public String toFormulaString(Workbook book)    {        return "UNKNOWN";    }    public byte getDefaultOperandClass() {return Ptg.CLASS_VALUE;}    public Object clone() {      return new UnknownPtg();    }    }