How to use the lightfm._lightfm_fast.FastLightFM function in lightfm

def _get_lightfm_data(self):

        lightfm_data = FastLightFM(
            self.item_embeddings,
            self.item_embedding_gradients,
            self.item_embedding_momentum,
            self.item_biases,
            self.item_bias_gradients,
            self.item_bias_momentum,
            self.user_embeddings,
            self.user_embedding_gradients,
            self.user_embedding_momentum,
            self.user_biases,
            self.user_bias_gradients,
            self.user_bias_momentum,
            self.no_components,
            int(self.learning_schedule == "adadelta"),
            self.learning_rate,
            self.rho,