@java.lang.Override
    public Builder newBuilderForType() {
      return newBuilder();
    }
<pre>
Aggregate method for the current data schema key.
</pre>

<code>
optional .google.cloud.visionai.v1.SchemaKeySortingStrategy.Option.AggregateMethod aggregate_method = 3;
</code>

@return The aggregateMethod.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SchemaKeySortingStrategy.java