chore: fix lint errors.

samples/snippets/src/main/java/com/example/spanner/admin/generated/AddAndDropDatabaseRole.java

@@ -45,12 +45,13 @@ static void addAndDropDatabaseRole(
     try {
       System.out.println("Waiting for role create operation to complete...");
       databaseAdminClient.updateDatabaseDdlAsync(
-          DatabaseName.of(projectId, instanceId, databaseId),
-          ImmutableList.of(
-              String.format("CREATE ROLE `%s`", parentRole),
-              String.format("GRANT SELECT ON TABLE Albums TO ROLE `%s`", parentRole),
-              String.format("CREATE ROLE `%s`", childRole),
-              String.format("GRANT ROLE `%s` TO ROLE `%s`", parentRole, childRole))).get(5, TimeUnit.MINUTES);
+              DatabaseName.of(projectId, instanceId, databaseId),
+              ImmutableList.of(
+                  String.format("CREATE ROLE `%s`", parentRole),
+                  String.format("GRANT SELECT ON TABLE Albums TO ROLE `%s`", parentRole),
+                  String.format("CREATE ROLE `%s`", childRole),
+                  String.format("GRANT ROLE `%s` TO ROLE `%s`", parentRole, childRole)))
+          .get(5, TimeUnit.MINUTES);
       System.out.printf(
           "Created roles %s and %s and granted privileges%n", parentRole, childRole);
       // Delete role and membership.

samples/snippets/src/main/java/com/example/spanner/admin/generated/AddJsonbColumnSample.java

@@ -41,8 +41,8 @@ static void addJsonbColumn(String projectId, String instanceId, String databaseI
     // Wait for the operation to finish.
     // This will throw an ExecutionException if the operation fails.
     databaseAdminClient.updateDatabaseDdlAsync(
-            DatabaseName.of(projectId, instanceId, databaseId),
-            ImmutableList.of("ALTER TABLE Venues ADD COLUMN VenueDetails JSONB")).get();
+        DatabaseName.of(projectId, instanceId, databaseId),
+        ImmutableList.of("ALTER TABLE Venues ADD COLUMN VenueDetails JSONB")).get();
     System.out.printf("Successfully added column `VenueDetails`%n");
   }
 }

samples/snippets/src/main/java/com/example/spanner/admin/generated/AddNumericColumnSample.java

@@ -17,6 +17,7 @@
 package com.example.spanner.admin.generated;
 
 // [START spanner_add_numeric_column]
+
 import com.google.cloud.spanner.admin.database.v1.DatabaseAdminClient;
 import com.google.common.collect.ImmutableList;
 import com.google.spanner.admin.database.v1.DatabaseName;

samples/snippets/src/main/java/com/example/spanner/admin/generated/AlterSequenceSample.java

@@ -17,6 +17,7 @@
 package com.example.spanner.admin.generated;
 
 // [START spanner_alter_sequence]
+
 import com.google.cloud.spanner.DatabaseClient;
 import com.google.cloud.spanner.DatabaseId;
 import com.google.cloud.spanner.ResultSet;
@@ -34,6 +35,7 @@
 import java.util.concurrent.TimeoutException;
 
 public class AlterSequenceSample {
+
   static void alterSequence() throws IOException {
     // TODO(developer): Replace these variables before running the sample.
     final String projectId = "my-project";
@@ -42,7 +44,8 @@ static void alterSequence() throws IOException {
     alterSequence(projectId, instanceId, databaseId);
   }
 
-  static void alterSequence(String projectId, String instanceId, String databaseId) throws IOException {
+  static void alterSequence(String projectId, String instanceId, String databaseId)
+      throws IOException {
     DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create();
     try (Spanner spanner =
         SpannerOptions.newBuilder().setProjectId(projectId).build().getService()) {

samples/snippets/src/main/java/com/example/spanner/admin/generated/AlterTableWithForeignKeyDeleteCascadeSample.java

@@ -17,6 +17,7 @@
 package com.example.spanner.admin.generated;
 
 // [START spanner_alter_table_with_foreign_key_delete_cascade]
+
 import com.google.cloud.spanner.admin.database.v1.DatabaseAdminClient;
 import com.google.common.collect.ImmutableList;
 import com.google.spanner.admin.database.v1.DatabaseName;

samples/snippets/src/main/java/com/example/spanner/admin/generated/CreateDatabaseWithVersionRetentionPeriodSample.java

@@ -51,7 +51,8 @@ static void createDatabaseWithVersionRetentionPeriod(String projectId,
               .setParent(InstanceName.of(projectId, instanceId).toString())
               .setCreateStatement("CREATE DATABASE `" + databaseId + "`")
               .addAllExtraStatements(Lists.newArrayList("ALTER DATABASE " + "`" + databaseId + "`"
-                  + " SET OPTIONS ( version_retention_period = '" + versionRetentionPeriod + "' )")).build();
+                  + " SET OPTIONS ( version_retention_period = '" + versionRetentionPeriod + "' )"))
+              .build();
       Database database =
           databaseAdminClient.createDatabaseAsync(request).get();
       System.out.println("Created database [" + database.getName() + "]");

samples/snippets/src/main/java/com/example/spanner/admin/generated/CreateInstanceExample.java

@@ -17,6 +17,7 @@
 package com.example.spanner.admin.generated;
 
 //[START spanner_create_instance]
+
 import com.google.cloud.spanner.admin.instance.v1.InstanceAdminClient;
 import com.google.spanner.admin.instance.v1.CreateInstanceRequest;
 import com.google.spanner.admin.instance.v1.Instance;

samples/snippets/src/main/java/com/example/spanner/admin/generated/CreateSequenceSample.java

@@ -17,6 +17,7 @@
 package com.example.spanner.admin.generated;
 
 // [START spanner_create_sequence]
+
 import com.google.cloud.spanner.DatabaseClient;
 import com.google.cloud.spanner.DatabaseId;
 import com.google.cloud.spanner.ResultSet;
@@ -34,6 +35,7 @@
 import java.util.concurrent.TimeoutException;
 
 public class CreateSequenceSample {
+
   static void createSequence() throws IOException {
     // TODO(developer): Replace these variables before running the sample.
     final String projectId = "my-project";
@@ -42,7 +44,8 @@ static void createSequence() throws IOException {
     createSequence(projectId, instanceId, databaseId);
   }
 
-  static void createSequence(String projectId, String instanceId, String databaseId) throws IOException {
+  static void createSequence(String projectId, String instanceId, String databaseId)
+      throws IOException {
     DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create();
 
     try (Spanner spanner =

samples/snippets/src/main/java/com/example/spanner/admin/generated/CreateTableWithForeignKeyDeleteCascadeSample.java

@@ -17,6 +17,7 @@
 package com.example.spanner.admin.generated;
 
 // [START spanner_create_table_with_foreign_key_delete_cascade]
+
 import com.google.cloud.spanner.admin.database.v1.DatabaseAdminClient;
 import com.google.common.collect.ImmutableList;
 import com.google.spanner.admin.database.v1.CreateDatabaseRequest;

samples/snippets/src/main/java/com/example/spanner/admin/generated/DropForeignKeyConstraintDeleteCascadeSample.java

@@ -17,6 +17,7 @@
 package com.example.spanner.admin.generated;
 
 // [START spanner_drop_foreign_key_constraint_delete_cascade]
+
 import com.google.cloud.spanner.admin.database.v1.DatabaseAdminClient;
 import com.google.common.collect.ImmutableList;
 import com.google.spanner.admin.database.v1.DatabaseName;

samples/snippets/src/main/java/com/example/spanner/admin/generated/DropSequenceSample.java

@@ -17,6 +17,7 @@
 package com.example.spanner.admin.generated;
 
 // [START spanner_drop_sequence]
+
 import com.google.cloud.spanner.SpannerExceptionFactory;
 import com.google.cloud.spanner.admin.database.v1.DatabaseAdminClient;
 import com.google.common.collect.ImmutableList;
@@ -27,6 +28,7 @@
 import java.util.concurrent.TimeoutException;
 
 public class DropSequenceSample {
+
   static void dropSequence() throws IOException {
     // TODO(developer): Replace these variables before running the sample.
     final String projectId = "my-project";
@@ -35,7 +37,8 @@ static void dropSequence() throws IOException {
     dropSequence(projectId, instanceId, databaseId);
   }
 
-  static void dropSequence(String projectId, String instanceId, String databaseId) throws IOException {
+  static void dropSequence(String projectId, String instanceId, String databaseId)
+      throws IOException {
     DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create();
     try {
       databaseAdminClient

samples/snippets/src/main/java/com/example/spanner/admin/generated/ListDatabasesSample.java

@@ -42,7 +42,7 @@ static void listDatabases(String projectId, String instanceId) throws IOExceptio
 
     System.out.println("Databases for projects/" + projectId + "/instances/" + instanceId);
 
-    for(ListDatabasesPage page: response.iteratePages()) {
+    for (ListDatabasesPage page : response.iteratePages()) {
       for (Database database : page.iterateAll()) {
         final String defaultLeader = database.getDefaultLeader().equals("")
             ? "" : "(default leader = " + database.getDefaultLeader() + ")";

samples/snippets/src/main/java/com/example/spanner/admin/generated/PgAlterSequenceSample.java

@@ -17,6 +17,7 @@
 package com.example.spanner.admin.generated;
 
 // [START spanner_postgresql_alter_sequence]
+
 import com.google.cloud.spanner.DatabaseClient;
 import com.google.cloud.spanner.DatabaseId;
 import com.google.cloud.spanner.ResultSet;
@@ -34,6 +35,7 @@
 import java.util.concurrent.TimeoutException;
 
 public class PgAlterSequenceSample {
+
   static void pgAlterSequence() throws IOException {
     // TODO(developer): Replace these variables before running the sample.
     final String projectId = "my-project";
@@ -42,7 +44,8 @@ static void pgAlterSequence() throws IOException {
     pgAlterSequence(projectId, instanceId, databaseId);
   }
 
-  static void pgAlterSequence(String projectId, String instanceId, String databaseId) throws IOException {
+  static void pgAlterSequence(String projectId, String instanceId, String databaseId)
+      throws IOException {
     try (Spanner spanner =
         SpannerOptions.newBuilder().setProjectId(projectId).build().getService()) {
       final DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create();

samples/snippets/src/main/java/com/example/spanner/admin/generated/PgCaseSensitivitySample.java

@@ -43,7 +43,8 @@ static void pgCaseSensitivity() throws IOException {
     pgCaseSensitivity(projectId, instanceId, databaseId);
   }
 
-  static void pgCaseSensitivity(String projectId, String instanceId, String databaseId) throws IOException {
+  static void pgCaseSensitivity(String projectId, String instanceId, String databaseId)
+      throws IOException {
     DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create();
 
     try (Spanner spanner =
@@ -58,17 +59,17 @@ static void pgCaseSensitivity(String projectId, String instanceId, String databa
       // See https://www.postgresql.org/docs/current/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
       // for more information.
       databaseAdminClient.updateDatabaseDdlAsync(
-              DatabaseName.of(projectId, instanceId, databaseId),
-              Lists.newArrayList(
-                  "CREATE TABLE Singers ("
-                      // SingerId will be folded to `singerid`.
-                      + "  SingerId      bigint NOT NULL PRIMARY KEY,"
-                      // FirstName and LastName are double-quoted and will therefore retain their
-                      // mixed case and are case-sensitive. This means that any statement that
-                      // references any of these columns must use double quotes.
-                      + "  \"FirstName\" varchar(1024) NOT NULL,"
-                      + "  \"LastName\"  varchar(1024) NOT NULL"
-                      + ")")).get();
+          DatabaseName.of(projectId, instanceId, databaseId),
+          Lists.newArrayList(
+              "CREATE TABLE Singers ("
+                  // SingerId will be folded to `singerid`.
+                  + "  SingerId      bigint NOT NULL PRIMARY KEY,"
+                  // FirstName and LastName are double-quoted and will therefore retain their
+                  // mixed case and are case-sensitive. This means that any statement that
+                  // references any of these columns must use double quotes.
+                  + "  \"FirstName\" varchar(1024) NOT NULL,"
+                  + "  \"LastName\"  varchar(1024) NOT NULL"
+                  + ")")).get();
 
       DatabaseClient client =
           spanner.getDatabaseClient(DatabaseId.of(projectId, instanceId, databaseId));

samples/snippets/src/main/java/com/example/spanner/admin/generated/PgCreateSequenceSample.java

@@ -17,6 +17,7 @@
 package com.example.spanner.admin.generated;
 
 // [START spanner_postgresql_create_sequence]
+
 import com.google.cloud.spanner.DatabaseClient;
 import com.google.cloud.spanner.DatabaseId;
 import com.google.cloud.spanner.ResultSet;
@@ -34,6 +35,7 @@
 import java.util.concurrent.TimeoutException;
 
 public class PgCreateSequenceSample {
+
   static void pgCreateSequence() throws IOException {
     // TODO(developer): Replace these variables before running the sample.
     final String projectId = "my-project";
@@ -42,7 +44,8 @@ static void pgCreateSequence() throws IOException {
     pgCreateSequence(projectId, instanceId, databaseId);
   }
 
-  static void pgCreateSequence(String projectId, String instanceId, String databaseId) throws IOException {
+  static void pgCreateSequence(String projectId, String instanceId, String databaseId)
+      throws IOException {
     DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create();
 
     try (Spanner spanner =

samples/snippets/src/main/java/com/example/spanner/admin/generated/PgDropSequenceSample.java

@@ -17,6 +17,7 @@
 package com.example.spanner.admin.generated;
 
 // [START spanner_postgresql_drop_sequence]
+
 import com.google.cloud.spanner.Spanner;
 import com.google.cloud.spanner.SpannerExceptionFactory;
 import com.google.cloud.spanner.SpannerOptions;
@@ -29,6 +30,7 @@
 import java.util.concurrent.TimeoutException;
 
 public class PgDropSequenceSample {
+
   static void pgDropSequence() throws IOException {
     // TODO(developer): Replace these variables before running the sample.
     final String projectId = "my-project";
@@ -37,7 +39,8 @@ static void pgDropSequence() throws IOException {
     pgDropSequence(projectId, instanceId, databaseId);
   }
 
-  static void pgDropSequence(String projectId, String instanceId, String databaseId) throws IOException {
+  static void pgDropSequence(String projectId, String instanceId, String databaseId)
+      throws IOException {
     DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create();
 
     try (Spanner spanner =

samples/snippets/src/main/java/com/example/spanner/admin/generated/PgInterleavedTableSample.java

@@ -35,7 +35,8 @@ static void pgInterleavedTable() throws IOException {
     pgInterleavedTable(projectId, instanceId, databaseId);
   }
 
-  static void pgInterleavedTable(String projectId, String instanceId, String databaseId) throws IOException {
+  static void pgInterleavedTable(String projectId, String instanceId, String databaseId)
+      throws IOException {
     DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create();
     try {
       // The Spanner PostgreSQL dialect extends the PostgreSQL dialect with certain Spanner
@@ -45,18 +46,18 @@ static void pgInterleavedTable(String projectId, String instanceId, String datab
       databaseAdminClient.updateDatabaseDdlAsync(DatabaseName.of(projectId,
               instanceId,
               databaseId),
-              Arrays.asList(
-                  "CREATE TABLE Singers ("
-                      + "  SingerId  bigint NOT NULL PRIMARY KEY,"
-                      + "  FirstName varchar(1024) NOT NULL,"
-                      + "  LastName  varchar(1024) NOT NULL"
-                      + ")",
-                  "CREATE TABLE Albums ("
-                      + "  SingerId bigint NOT NULL,"
-                      + "  AlbumId  bigint NOT NULL,"
-                      + "  Title    varchar(1024) NOT NULL,"
-                      + "  PRIMARY KEY (SingerId, AlbumId)"
-                      + ") INTERLEAVE IN PARENT Singers ON DELETE CASCADE")).get();
+          Arrays.asList(
+              "CREATE TABLE Singers ("
+                  + "  SingerId  bigint NOT NULL PRIMARY KEY,"
+                  + "  FirstName varchar(1024) NOT NULL,"
+                  + "  LastName  varchar(1024) NOT NULL"
+                  + ")",
+              "CREATE TABLE Albums ("
+                  + "  SingerId bigint NOT NULL,"
+                  + "  AlbumId  bigint NOT NULL,"
+                  + "  Title    varchar(1024) NOT NULL,"
+                  + "  PRIMARY KEY (SingerId, AlbumId)"
+                  + ") INTERLEAVE IN PARENT Singers ON DELETE CASCADE")).get();
       System.out.println("Created interleaved table hierarchy using PostgreSQL dialect");
     } catch (ExecutionException e) {
       // If the operation failed during execution, expose the cause.

samples/snippets/src/main/java/com/example/spanner/admin/generated/UpdateDatabaseSample.java

@@ -17,6 +17,7 @@
 package com.example.spanner.admin.generated;
 
 // [START spanner_update_database]
+
 import com.google.api.gax.longrunning.OperationFuture;
 import com.google.cloud.spanner.SpannerExceptionFactory;
 import com.google.cloud.spanner.admin.database.v1.DatabaseAdminClient;

samples/snippets/src/main/java/com/example/spanner/admin/generated/UpdateDatabaseWithDefaultLeaderSample.java

@@ -39,7 +39,8 @@ static void updateDatabaseWithDefaultLeader() throws IOException {
   }
 
   static void updateDatabaseWithDefaultLeader(
-      String projectId, String instanceId, String databaseId, String defaultLeader) throws IOException {
+      String projectId, String instanceId, String databaseId, String defaultLeader)
+      throws IOException {
     DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create();
 
     try {

samples/snippets/src/test/java/com/example/spanner/admin/generated/DatabaseRolesIT.java

@@ -35,7 +35,9 @@
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
-/** Integration tests for FGAC samples for GoogleStandardSql dialect. */
+/**
+ * Integration tests for FGAC samples for GoogleStandardSql dialect.
+ */
 @RunWith(JUnit4.class)
 public class DatabaseRolesIT extends SampleTestBaseV2 {
 
@@ -47,7 +49,8 @@ public static void createTestDatabase() throws Exception {
     final CreateDatabaseRequest request =
         CreateDatabaseRequest.newBuilder()
             .setParent(
-                com.google.spanner.admin.database.v1.InstanceName.of(projectId, instanceId).toString())
+                com.google.spanner.admin.database.v1.InstanceName.of(projectId, instanceId)
+                    .toString())
             .setCreateStatement("CREATE DATABASE `" + database + "`")
             .addAllExtraStatements(Lists.newArrayList(
                 "CREATE TABLE Singers ("

samples/snippets/src/test/java/com/example/spanner/admin/generated/GetDatabaseDdlSampleIT.java

@@ -45,7 +45,8 @@ public void testGetDatabaseDdl() throws Exception {
     final CreateDatabaseRequest request =
         CreateDatabaseRequest.newBuilder()
             .setParent(
-                com.google.spanner.admin.database.v1.InstanceName.of(projectId, multiRegionalInstanceId).toString())
+                com.google.spanner.admin.database.v1.InstanceName.of(projectId,
+                    multiRegionalInstanceId).toString())
             .setCreateStatement("CREATE DATABASE `" + databaseId + "`")
             .addAllExtraStatements(Lists.newArrayList(
                 "CREATE TABLE Singers (Id INT64 NOT NULL) PRIMARY KEY (Id)",

samples/snippets/src/test/java/com/example/spanner/admin/generated/SampleTestBaseV2.java

@@ -164,7 +164,7 @@ static String getInstanceName(final String projectId, final String instanceId) {
 
   static String getCreateDatabaseStatement(
       final String databaseName, final DatabaseDialect dialect) {
-    if(dialect == DatabaseDialect.GOOGLE_STANDARD_SQL) {
+    if (dialect == DatabaseDialect.GOOGLE_STANDARD_SQL) {
       return "CREATE DATABASE `" + databaseName + "`";
     } else {
       return "CREATE DATABASE \"" + databaseName + "\"";