code: def with_scope(self, request, timeout=None, metadata=None, credentials=None,
                          *, standalone_pool = None):
          
          return _utils.IteratorScope(self(request, timeout, metadata, credentials, standalone_pool=standalone_pool))
docs: Return an ASYNC context manager to ensure the call is closed outside the scope::
          
              async with mystub.mymethod.with_scope(...) as iter:
                  async for i in iter:
                      ...