@java.lang.Override
  public boolean hasSchemaKeySortingStrategy() {
    return sortSpecCase_ == 9;
  }
<pre>
Sort by the value under the data schema key.
</pre>

<code>.google.cloud.visionai.v1.SchemaKeySortingStrategy schema_key_sorting_strategy = 9;
</code>

@return Whether the schemaKeySortingStrategy field is set.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SearchAssetsRequest.java