return false;
    }
    return true;
  }
  bool HostCallback(Stream* stream,
                    absl::AnyInvocable<absl::Status() &&> callback) override {
    SP_Stream stream_handle = static_cast<CStream*>(stream)->Handle();
    HostCallbackContext* ctx = new HostCallbackContext{std::move(callback)};
    return stream_executor_->host_callback(&device_, stream_handle,