public Builder mergeFrom(com.google.cloud.vertexai.api.RetrievalConfig other) {
      if (other == com.google.cloud.vertexai.api.RetrievalConfig.getDefaultInstance()) return this;
      if (other.hasLatLng()) {
        mergeLatLng(other.getLatLng());
      }
      if (other.hasLanguageCode()) {
        languageCode_ = other.languageCode_;
        bitField0_ |= 0x00000002;
        onChanged();
      }
      this.mergeUnknownFields(other.getUnknownFields());
      onChanged();
      return this;
    }
<pre>
Retrieval config.
</pre>

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