ng>llm_service</strong> nodes.</p>
<h4 id="defining-functions">Defining Functions<a class="headerlink" href="#defining-functions" title="Permanent link">&para;</a></h4>
<ul>
<li>Functions must return a dictionary whose keys match the <code>outputs</code> defined in the YAML node.</li>
<li>All parameters must be type-annotated.</li>
<li>Include docstrings to describe the function's purpose, parameters, and return values.</li>
</ul>
<p><strong>Example (<code>functions.py</code>):</strong></p>
<div class="code