code: def call_extra(self, methods, kwargs):
          
          old = list(self._nonwrappers), list(self._wrappers)
          for method in methods:
              opts = dict(hookwrapper=False, trylast=False, tryfirst=False)
              hookimpl = HookImpl(None, "<temp>", method, opts)
              self._add_hookimpl(hookimpl)
          try:
              return self(**kwargs)
          finally:
              self._nonwrappers, self._wrappers = old
docs: Call the hook with some additional temporarily participating
          methods using the specified kwargs as call parameters.