public com.google.protobuf.ProtocolStringList getDisplayNamesList() {
      displayNames_.makeImmutable();
      return displayNames_;
    }
<pre>
The display names of the AnnotationSpecs that had been identified, order
matches the IDs.
</pre>

<code>repeated string display_names = 2;</code>

@return A list containing the displayNames.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ClassificationPredictionResult.java