{% set sourceExtends = 'AppBundle:Documents:v2\\Administrative\\B1_invoice.html.twig' %}
{% set documentType = 'B4' %}

{% if object.type == constant('AppBundle\\Entity\\Administrative\\Invoice\\InvoiceBase::INVOICE_TYPE_RENTAL') %}
    {% set sourceExtends = 'AppBundle:Documents:v2\\Administrative\\B8_rental_invoice.html.twig' %}
{% endif %}

{% extends sourceExtends %}