public Builder clearImageQuery() {
      if (imageQueryBuilder_ == null) {
        if (queryCase_ == 2) {
          queryCase_ = 0;
          query_ = null;
          onChanged();
        }
      } else {
        if (queryCase_ == 2) {
          queryCase_ = 0;
          query_ = null;
        }
        imageQueryBuilder_.clear();
      }
      return this;
    }
<pre>
An image-only query.
</pre>

<code>.google.cloud.visionai.v1.ImageQuery image_query = 2;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SearchIndexEndpointRequest.java