public final String toFormulaString() {throw new RuntimeException("toFormulaString(String[] operands) should be used for subclasses of OperationPtgs");}

public final String toFormulaString ( ) { throw new RuntimeException ( "toFormulaString(String[] operands) should be used for subclasses of OperationPtgs" ) ; }
public override String ToFormulaString(){throw new NotImplementedException("ToFormulaString(String[] operands) should be used for subclasses of OperationPtgs");}
