trash = expr.accept(this); return self;
JExpression newExpr = (JExpression)expr.accept(this); return new JUnaryPlusExpression(null, newExpr);
    public Object visitUnaryPlusExpression(JUnaryExpression self,                                         JExpression expr)    {        blockStart("UnaryPlusExpression");        trash = expr.accept(this);   	return self;    }