Upgrade to Nullability Plugin 0.0.9

Closes gh-48638

module/spring-boot-devtools/src/test/java/org/springframework/boot/devtools/test/MockClientHttpRequestFactory.java

@@ -24,6 +24,8 @@ import java.util.Deque;
 import java.util.List;
 import java.util.concurrent.atomic.AtomicLong;
 
+import org.jspecify.annotations.Nullable;
+
 import org.springframework.http.HttpMethod;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -105,11 +107,11 @@ public class MockClientHttpRequestFactory implements ClientHttpRequestFactory {
 
 		private final int delay;
 
-		private final byte[] payload;
+		private final byte @Nullable [] payload;
 
 		private final HttpStatus status;
 
-		Response(int delay, byte[] payload, HttpStatus status) {
+		Response(int delay, byte @Nullable [] payload, HttpStatus status) {
 			this.delay = delay;
 			this.payload = payload;
 			this.status = status;

module/spring-boot-devtools/src/test/java/org/springframework/boot/devtools/test/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-present the original author or authors.
+ *
+ * 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.
+ */
+
+@NullMarked
+package org.springframework.boot.devtools.test;
+
+import org.jspecify.annotations.NullMarked;

module/spring-boot-devtools/src/test/java/org/springframework/boot/loader/launch/FakeJarLauncher.java

@@ -18,6 +18,8 @@ package org.springframework.boot.loader.launch;
 
 import java.util.function.Consumer;
 
+import org.jspecify.annotations.Nullable;
+
 /**
  * Fake launcher in the {@code org.springframework.boot.loader.launch} package used in
  * {@code MainMethodTests}.
@@ -26,13 +28,15 @@ import java.util.function.Consumer;
  */
 public final class FakeJarLauncher {
 
-	public static Consumer<String[]> action;
+	public static @Nullable Consumer<String[]> action;
 
 	private FakeJarLauncher() {
 	}
 
 	public static void main(String... args) {
-		action.accept(args);
+		if (action != null) {
+			action.accept(args);
+		}
 	}
 
 }

module/spring-boot-devtools/src/test/java/org/springframework/boot/loader/launch/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-present the original author or authors.
+ *
+ * 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.
+ */
+
+@NullMarked
+package org.springframework.boot.loader.launch;
+
+import org.jspecify.annotations.NullMarked;