public Builder mergeSchemaKeySortingStrategy(
        com.google.cloud.visionai.v1.SchemaKeySortingStrategy value) {
      if (schemaKeySortingStrategyBuilder_ == null) {
        if (sortSpecCase_ == 9
            && sortSpec_
                != com.google.cloud.visionai.v1.SchemaKeySortingStrategy.getDefaultInstance()) {
          sortSpec_ =
              com.google.cloud.visionai.v1.SchemaKeySortingStrategy.newBuilder(
                      (com.google.cloud.visionai.v1.SchemaKeySortingStrategy) sortSpec_)
                  .mergeFrom(value)
                  .buildPartial();
        } else {
          sortSpec_ = value;
        }
        onChanged();
      } else {
        if (sortSpecCase_ == 9) {
          schemaKeySortingStrategyBuilder_.mergeFrom(value);
        } else {
          schemaKeySortingStrategyBuilder_.setMessage(value);
        }
      }
      sortSpecCase_ = 9;
      return this;
    }
<pre>
Sort by the value under the data schema key.
</pre>

<code>.google.cloud.visionai.v1.SchemaKeySortingStrategy schema_key_sorting_strategy = 9;
</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SearchAssetsRequest.java