@java.lang.Override
  public boolean hasUsageMetadata() {
    return ((bitField0_ & 0x00000010) != 0);
  }
<pre>
Output only. Metadata on the usage of the cached content.
</pre>

<code>
.google.cloud.vertexai.v1.CachedContent.UsageMetadata usage_metadata = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>

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