 with <a href="https://platform.openai.com/docs/guides/structured-outputs">structured outputs</a>. Structured outputs is a great 
practical feature that allows you to enforce a predetermined schema from the openAI API call. Using it ensures the model will always generate responses that adhere to your supplied schema. So, if you want the node output to be of the type</p>
<p><code>{'field_1':value_1, 'field_2':value_2}</code></p>
<p>where the values are strings, you first define a pydantic model that defines 