private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vision.v1.SafeSearchAnnotation,
            com.google.cloud.vision.v1.SafeSearchAnnotation.Builder,
            com.google.cloud.vision.v1.SafeSearchAnnotationOrBuilder>
        getSafeSearchAnnotationFieldBuilder() {
      if (safeSearchAnnotationBuilder_ == null) {
        safeSearchAnnotationBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vision.v1.SafeSearchAnnotation,
                com.google.cloud.vision.v1.SafeSearchAnnotation.Builder,
                com.google.cloud.vision.v1.SafeSearchAnnotationOrBuilder>(
                getSafeSearchAnnotation(), getParentForChildren(), isClean());
        safeSearchAnnotation_ = null;
      }
      return safeSearchAnnotationBuilder_;
    }
<pre>
If present, safe-search annotation has completed successfully.
</pre>

<code>.google.cloud.vision.v1.SafeSearchAnnotation safe_search_annotation = 6;</code>
java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/AnnotateImageResponse.java