public override REBase Copy() { REExpression _condition = (Condition != null)? (REExpression)Condition.Copy() : null; REStatement _thenStatement = (ThenStatement != null)? (REStatement)ThenStatement.Copy() : null; REStatement _elseStatement = (ElseStatement != null)? (REStatement)ElseStatement.Copy() : null; return(new REIfStatement(_condition, _thenStatement, _elseStatement)); }