@java.lang.Override
      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
          internalGetFieldAccessorTable() {
        return com.google.cloud.vertexai.api.ToolProto
            .internal_static_google_cloud_vertexai_v1_RagRetrievalConfig_Ranking_RankService_fieldAccessorTable
            .ensureFieldAccessorsInitialized(
                com.google.cloud.vertexai.api.RagRetrievalConfig.Ranking.RankService.class,
                com.google.cloud.vertexai.api.RagRetrievalConfig.Ranking.RankService.Builder.class);
      }
<pre>
Config for Rank Service.
</pre>

Protobuf type {@code google.cloud.vertexai.v1.RagRetrievalConfig.Ranking.RankService}
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/RagRetrievalConfig.java