'Does this have a rendering scheduled?'

@property
def is_rendering_scheduled(self):

    if (not self.render_scheduled_at):
        return False
    timeout = config.KUMA_DOCUMENT_RENDER_TIMEOUT
    max_duration = timedelta(seconds=timeout)
    duration = (datetime.now() - self.render_scheduled_at)
    if (duration > max_duration):
        return False
    if (not self.last_rendered_at):
        return True
    return (self.render_scheduled_at > self.last_rendered_at)
