@java.lang.Override
  public boolean hasExpireTime() {
    return expirationCase_ == 9;
  }
<pre>
Timestamp of when this resource is considered expired.
This is *always* provided on output, regardless of what was sent
on input.
</pre>

<code>.google.protobuf.Timestamp expire_time = 9;</code>

@return Whether the expireTime field is set.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/CachedContent.java