code: def vq_discrete_bottleneck(x,
                             bottleneck_bits,
                             beta=0.25,
                             decay=0.999,
                             epsilon=1e-5,
                             soft_em=False,
                             num_samples=10):
    
    bottleneck_size = 2**bottleneck_bits
    x_means_hot, e_loss, _ = vq_body(
        x,
        bottleneck_size,
        beta=beta,
        decay=decay,
        epsilon=epsilon,
        soft_em=soft_em,
        num_samples=num_samples)
    return x_means_hot, e_loss
docs: Simple vector quantized discrete bottleneck.