def get_billable_items(self):
        """Return a list of billable items
        """
        items = []
        for obj in self.context.getBillableItems():
            if self.is_profile(obj):
                items.append({
                    "obj": obj,
                    "title": obj.Title(),
                    "vat": obj.getAnalysisProfileVAT(),
                    "price": self.format_price(obj.getAnalysisProfilePrice()),
                })
            if self.is_analysis(obj):
                items.append({
                    "obj": obj,
                    "title": obj.Title(),
                    "vat": obj.getVAT(),
                    "price": self.format_price(obj.getPrice()),
                })
        return items
Return a list of billable items