async _call(model_inputs) {
        return new CausalLMOutput(await super._call(model_inputs));
    }
@param {Object} model_inputs
@param {Tensor} model_inputs.input_values Float values of input raw speech waveform.
@param {Tensor} model_inputs.attention_mask Mask to avoid performing convolution and attention on padding token indices. Mask values selected in [0, 1]