model_v3_large_ssld = pdx.cls.MobileNetV3_large_ssld(num_classes=len(train_dataset.labels),input_channel=1)

通过paddlex.cls获取的模型 怎么得到模型的参数

custom_optimizer = paddle.optimizer.Momentum(
    learning_rate=scheduler,
    momentum=.9,
    weight_decay =paddle.regularizer.L2Decay(coeff=.00002),
    parameters=model_v3_large_ssld.parameters())

报错'MobileNetV3_large_ssld' object has no attribute 'parameters'

请求问下一parameters  = 怎么填写