chore(samples): Add BatchGetEffectiveIamPolicy code samples (#1325)

* feat: add BatchGetEffectiveIamPolicy code samples

* refactor: Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

asset/src/main/java/com/example/asset/BatchGetEffectiveIamPolicyExample.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2022 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
+ *
+ * http://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.
+ */
+
+package com.example.asset;
+
+// [START asset_quickstart_batch_get_effective_iam_policy]
+// Imports the Google Cloud client library
+
+import com.google.api.gax.rpc.ApiException;
+import com.google.cloud.asset.v1.AssetServiceClient;
+import com.google.cloud.asset.v1.BatchGetEffectiveIamPoliciesRequest;
+import com.google.cloud.asset.v1.BatchGetEffectiveIamPoliciesResponse;
+import java.io.IOException;
+import java.util.Arrays;
+
+/** Batch get effective iam policy example. */
+public class BatchGetEffectiveIamPolicyExample {
+
+  /**
+   * Batch get effective iam policies specified list of resources within accessible scope, such as a
+   * project, folder or organization.
+   *
+   * @param resourceNames a string array denoting full resource names.
+   * @param scope a string denoting scope, which can be a Project, Folder or Organization.
+   */
+  public static void batchGetEffectiveIamPolicies(String[] resourceNames, String scope) {
+    BatchGetEffectiveIamPoliciesRequest request =
+        BatchGetEffectiveIamPoliciesRequest.newBuilder()
+            .setScope(scope)
+            .addAllNames(Arrays.asList(resourceNames))
+            .build();
+    try (AssetServiceClient client = AssetServiceClient.create()) {
+      BatchGetEffectiveIamPoliciesResponse response = client.batchGetEffectiveIamPolicies(request);
+      System.out.println("BatchGetEffectiveIamPolicies completed successfully:\n" + response);
+    } catch (IOException e) {
+      System.out.println("Failed to create client:\n" + e);
+    } catch (ApiException e) {
+      System.out.println("Error during BatchGetEffectiveIamPolicies:\n" + e);
+    }
+  }
+}
+// [END asset_quickstart_batch_get_effective_iam_policy]

asset/src/test/java/com/example/asset/BatchGetEffectiveIamPolicy.java

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+/*
+ * Copyright 2022 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
+ *
+ * http://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.
+ */
+
+package com.example.asset;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/** Tests for batch get effective iam policy sample. */
+@RunWith(JUnit4.class)
+@SuppressWarnings("checkstyle:abbreviationaswordinname")
+public class BatchGetEffectiveIamPolicy {
+
+  private static final String projectId = System.getenv("GOOGLE_CLOUD_PROJECT");
+  private static final String scope = "projects/" + projectId;
+  private static final String[] resourceNames = {
+    "//cloudresourcemanager.googleapis.com/projects/" + projectId
+  };
+
+  private ByteArrayOutputStream bout;
+  private PrintStream originalPrintStream;
+
+  @Before
+  public void setUp() {
+    bout = new ByteArrayOutputStream();
+    PrintStream out = new PrintStream(bout);
+    originalPrintStream = System.out;
+    System.setOut(out);
+  }
+
+  @After
+  public void tearDown() {
+    // restores print statements in the original method
+    System.out.flush();
+    System.setOut(originalPrintStream);
+  }
+
+  @Test
+  public void testBatchGetEffectiveIamPolicyExample() {
+    BatchGetEffectiveIamPolicyExample.batchGetEffectiveIamPolicies(resourceNames, scope);
+    String got = bout.toString();
+    assertThat(got).contains(resourceNames[0]);
+  }
+}