code: def always(func: Callable[[], Generator]) -> AlwaysFixture:
      
      global user_always
  
      if user_always is not None:
          raise RuntimeError('Multiple definitions of @always fixture.')
  
      as_context_manager = contextmanager(func)
      user_always = as_context_manager
      return as_context_manager
docs: Decorator that registers an 'always' fixture, which is always run before all provider
      state fixtures and faasport call.