chore: Update tuning tests and the Tuning validation dataset field conversion

PiperOrigin-RevId: 822341715

Author: speedstorm1

src/main/java/com/google/genai/Tunings.java

@@ -850,8 +850,8 @@ ObjectNode tuningValidationDatasetToVertex(JsonNode fromObject, ObjectNode paren
 
     if (Common.getValueByPath(fromObject, new String[] {"vertexDatasetResource"}) != null) {
       Common.setValueByPath(
-          parentObject,
-          new String[] {"supervisedTuningSpec", "trainingDatasetUri"},
+          toObject,
+          new String[] {"validationDatasetUri"},
           Common.getValueByPath(fromObject, new String[] {"vertexDatasetResource"}));
     }
 

src/main/java/com/google/genai/types/CreateTuningJobConfig.java

@@ -35,10 +35,7 @@ public abstract class CreateTuningJobConfig extends JsonSerializable {
   @JsonProperty("httpOptions")
   public abstract Optional<HttpOptions> httpOptions();
 
-  /**
-   * Cloud Storage path to file containing training dataset for tuning. The dataset must be
-   * formatted as a JSONL file.
-   */
+  /** Validation dataset for tuning. The dataset must be formatted as a JSONL file. */
   @JsonProperty("validationDataset")
   public abstract Optional<TuningValidationDataset> validationDataset();
 
@@ -138,17 +135,17 @@ public Builder httpOptions(HttpOptions.Builder httpOptionsBuilder) {
     /**
      * Setter for validationDataset.
      *
-     * <p>validationDataset: Cloud Storage path to file containing training dataset for tuning. The
-     * dataset must be formatted as a JSONL file.
+     * <p>validationDataset: Validation dataset for tuning. The dataset must be formatted as a JSONL
+     * file.
      */
     @JsonProperty("validationDataset")
     public abstract Builder validationDataset(TuningValidationDataset validationDataset);
 
     /**
      * Setter for validationDataset builder.
      *
-     * <p>validationDataset: Cloud Storage path to file containing training dataset for tuning. The
-     * dataset must be formatted as a JSONL file.
+     * <p>validationDataset: Validation dataset for tuning. The dataset must be formatted as a JSONL
+     * file.
      */
     public Builder validationDataset(TuningValidationDataset.Builder validationDatasetBuilder) {
       return validationDataset(validationDatasetBuilder.build());

src/main/java/com/google/genai/types/TuningValidationDataset.java

@@ -34,7 +34,7 @@ public abstract class TuningValidationDataset extends JsonSerializable {
   public abstract Optional<String> gcsUri();
 
   /**
-   * The resource name of the Vertex Multimodal Dataset that is used as training dataset. Example:
+   * The resource name of the Vertex Multimodal Dataset that is used as validation dataset. Example:
    * 'projects/my-project-id-or-number/locations/my-location/datasets/my-dataset-id'.
    */
   @JsonProperty("vertexDatasetResource")
@@ -70,7 +70,7 @@ private static Builder create() {
      * Setter for vertexDatasetResource.
      *
      * <p>vertexDatasetResource: The resource name of the Vertex Multimodal Dataset that is used as
-     * training dataset. Example:
+     * validation dataset. Example:
      * 'projects/my-project-id-or-number/locations/my-location/datasets/my-dataset-id'.
      */
     @JsonProperty("vertexDatasetResource")