aration()">
<h3>declaration</h3>
<div class="horizontal-scroll">
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Optional.html" title="class or interface in java.util" class="external-link">Optional</a>&lt;com.google.genai.types.FunctionDeclaration&gt;</span>&nbsp;<span class="element-name">declaration</span>()</div>
<div class="block"><span class="description-from-type-label">D