def sbatch_template_str(self):
        """:return Jinja sbatch template for the current tag as string"""
        templates = self.campaign.process.sbatch_template
        if isinstance(templates, Mapping):
            # find proper template according to the tag
            template = templates.get(self.tag)
            if template is None:
                template = templates.get('*')
            if template is None:
                template = SBATCH_JINJA_TEMPLATE
        else:
            template = templates
        return template