browser view with macros property needed for version_history_form preview

configure.zcml

<configure
  xmlns="http://namespaces.zope.org/zope"
  xmlns:browser="http://namespaces.zope.org/browser"
  i18n_domain="plone">

  <browser:page
    for="*"
    name="fiche_view"
    class=".app.views.FicheView"
    permission="zope2.View"
    />

</configure>

views.py

from Products.Five.browser.pagetemplatefile import ViewPageTemplateFile

from Products.Five.browser import BrowserView

class FicheView(BrowserView):
    index = ViewPageTemplateFile('fiche_view.pt')


    def __call__(self):
        # call is needed to return self.index otherwise you get an error
        # when trying to load a page as such: site/fiche_view
        return self.index()

    @property
    def macros(self):
        return self.index.macros