public static com.google.cloud.vertexai.api.RagRetrievalConfig.Ranking.RankService parseFrom(
          java.io.InputStream input) throws java.io.IOException {
        return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
      }
<pre>
Optional. The model name of the rank service.
Format: `semantic-ranker-512&#64;latest`
</pre>

<code>optional string model_name = 1 [(.google.api.field_behavior) = OPTIONAL];</code>

@return The bytes for modelName.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/RagRetrievalConfig.java