async _call(logits) {
        // Sample from logits, of dims [batch, sequence_length, vocab_size].
        // If index is specified, sample from [batch, index, vocab_size].
        return this.sample(logits);
    }
Executes the sampler, using the specified logits.
@param {Tensor} logits
@returns {Promise<[bigint, number][]>}