public static Builder newBuilder(
        com.google.cloud.vision.v1.ProductSearchResults.ObjectAnnotation prototype) {
      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
    }
<pre>
Score of the result. Range [0, 1].
</pre>

<code>float score = 4;</code>

@return The score.
java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/ProductSearchResults.java