public final byte getDefaultOperandClass() 
{
		return Ptg.CLASS_VALUE;
}

 abstract protected byte getSid()

 public final int getSize() 
{
		return 1;
}

 public final boolean isBaseToken() 
{
		return true;
}

All Operator Ptgs are base tokens (i.e. are not RVA classified)

 public final String toFormulaString(HSSFWorkbook book) 
{
    	// TODO - prune this method out of the hierarchy
    	throw new RuntimeException("toFormulaString(String[] operands) should be used for subclasses of OperationPtgs");
}

 public final  void writeBytes(byte[] array,
    int offset) 
{
		array[offset + 0] = getSid();
}