fix!: operation value is now a one-of path_value (#41)

* [CHANGE ME] Re-generated  to pick up changes in the API or client library generator.

* chore: allow breaking proto interface changes

* chore: allow breaking changes

recommender/src/main/java/com/google/cloud/examples/recommender/v1beta1/SampleListRecommendations.java

@@ -0,0 +1,65 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// DO NOT EDIT! This is a generated sample ("RequestPaged",  "sample_list_recommendations")
+// sample-metadata:
+//   title: List Recommendations
+//   description: List recommendations for a specified project, location, and recommender.
+//   usage: gradle run
+// -PmainClass=com.google.cloud.examples.recommender.v1beta1.SampleListRecommendations
+
+package com.google.cloud.examples.recommender.v1beta1;
+
+import com.google.cloud.recommender.v1beta1.ListRecommendationsRequest;
+import com.google.cloud.recommender.v1beta1.Recommendation;
+import com.google.cloud.recommender.v1beta1.RecommenderClient;
+
+public class SampleListRecommendations {
+  // [START ]
+  /*
+   * Please include the following imports to run this sample.
+   *
+   * import com.google.cloud.recommender.v1beta1.ListRecommendationsRequest;
+   * import com.google.cloud.recommender.v1beta1.Recommendation;
+   * import com.google.cloud.recommender.v1beta1.RecommenderClient;
+   */
+
+  /** List recommendations for a specified project, location, and recommender. */
+  public static void sampleListRecommendations() {
+    try (RecommenderClient recommenderClient = RecommenderClient.create()) {
+      String formattedParent =
+          RecommenderClient.formatRecommenderName("[PROJECT]", "[LOCATION]", "[RECOMMENDER]");
+      ListRecommendationsRequest request =
+          ListRecommendationsRequest.newBuilder().setParent(formattedParent).build();
+      for (Recommendation responseItem :
+          recommenderClient.listRecommendations(request).iterateAll()) {
+        Recommendation recommendation = responseItem;
+        System.out.printf("Recommendation name: %s\n", recommendation.getName());
+        System.out.printf("- description: %s\n", recommendation.getDescription());
+        System.out.printf(
+            "- primary_impact.category: %s\n", recommendation.getPrimaryImpact().getCategory());
+        System.out.printf("- state_info.state: %s\n", recommendation.getStateInfo().getState());
+        System.out.printf("- last_refresh_time: %s\n", recommendation.getLastRefreshTime());
+      }
+    } catch (Exception exception) {
+      System.err.println("Failed to create the client due to: " + exception);
+    }
+  }
+  // [END ]
+
+  public static void main(String[] args) {
+    sampleListRecommendations();
+  }
+}

recommender/src/main/java/com/google/cloud/examples/recommender/v1beta1/recommender.v1beta1.java.yaml

@@ -0,0 +1,15 @@
+---
+type: manifest/samples
+schema_version: 3
+java: &java
+  environment: "java"
+  bin: "mvn exec:java"
+  base_path: "samples/src/main/java/com/google/cloud/examples/recommender/v1beta1"
+  package: "com.google.cloud.examples.recommender.v1beta1"
+  invocation: "{bin} -Dexec.mainClass={class} -Dexec.args='@args'"
+samples:
+- <<: *java
+  sample: "sample_list_recommendations"
+  path: "{base_path}/SampleListRecommendations.java"
+  class: "{package}.SampleListRecommendations"
+  region_tag: ""