e></strong>:<code>Optional</code>[<code>int</code>]=<em><code>None</code></em>, <strong><code>length_penalty</code></strong>:<code>Optional</code>[<code>float</code>]=<em><code>None</code></em>, <strong><code>no_repeat_ngram_size</code></strong>:<code>Optional</code>[<code>int</code>]=<em><code>None</code></em>, <strong><code>encoder_no_repeat_ngram_size</code></strong>:<code>Optional</code>[<code>int</code>]=<em><code>None</code></em>, <strong><code>num_return_sequences</code></strong>:<code>Optional</code