docs: def call_template(self, template):
          '''
          Enforce the states in a template
          '''
          high = compile_template(template,
                                  self.rend,
                                  self.opts['renderer'],
                                  self.opts['renderer_blacklist'],
                                  self.opts['renderer_whitelist'])
          if not high:
              return high
          high, errors = self.render_template(high, template)
          if errors:
              return errors
          return self.call_high(high)