Fix bean type visibility

Closes gh-28437

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/cloudfoundry/reactive/ReactiveCloudFoundryActuatorAutoConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2021 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.
@@ -161,7 +161,7 @@ public class ReactiveCloudFoundryActuatorAutoConfiguration {
 
 	}
 
-	private static class WebFilterChainPostProcessor implements BeanPostProcessor {
+	static class WebFilterChainPostProcessor implements BeanPostProcessor {
 
 		@Override
 		public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/web/servlet/WebMvcEndpointChildContextConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.
@@ -112,7 +112,7 @@ class WebMvcEndpointChildContextConfiguration {
 	 * {@link WebServerFactoryCustomizer} to add an {@link ErrorPage} so that the
 	 * {@link ManagementErrorEndpoint} can be used.
 	 */
-	private static class ManagementErrorPageCustomizer
+	static class ManagementErrorPageCustomizer
 			implements WebServerFactoryCustomizer<ConfigurableServletWebServerFactory>, Ordered {
 
 		private final ServerProperties properties;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/flyway/FlywayAutoConfiguration.java

@@ -399,7 +399,7 @@ public class FlywayAutoConfiguration {
 	/**
 	 * Convert a String or Number to a {@link MigrationVersion}.
 	 */
-	private static class StringOrNumberToMigrationVersionConverter implements GenericConverter {
+	static class StringOrNumberToMigrationVersionConverter implements GenericConverter {
 
 		private static final Set<ConvertiblePair> CONVERTIBLE_TYPES;
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/hateoas/HypermediaHttpMessageConverterConfiguration.java

@@ -63,8 +63,7 @@ public class HypermediaHttpMessageConverterConfiguration {
 	 * {@code Jackson2ModuleRegisteringBeanPostProcessor} has registered the converter and
 	 * it is unordered.
 	 */
-	private static class HalMessageConverterSupportedMediaTypesCustomizer
-			implements BeanFactoryAware, InitializingBean {
+	static class HalMessageConverterSupportedMediaTypesCustomizer implements BeanFactoryAware, InitializingBean {
 
 		private volatile BeanFactory beanFactory;
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/MongoReactiveAutoConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.
@@ -94,14 +94,14 @@ public class MongoReactiveAutoConfiguration {
 	/**
 	 * {@link MongoClientSettingsBuilderCustomizer} to apply Mongo client settings.
 	 */
-	private static final class NettyDriverMongoClientSettingsBuilderCustomizer
+	static final class NettyDriverMongoClientSettingsBuilderCustomizer
 			implements MongoClientSettingsBuilderCustomizer, DisposableBean {
 
 		private final ObjectProvider<MongoClientSettings> settings;
 
 		private volatile EventLoopGroup eventLoopGroup;
 
-		private NettyDriverMongoClientSettingsBuilderCustomizer(ObjectProvider<MongoClientSettings> settings) {
+		NettyDriverMongoClientSettingsBuilderCustomizer(ObjectProvider<MongoClientSettings> settings) {
 			this.settings = settings;
 		}
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/webservices/WebServicesAutoConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2021 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.
@@ -93,7 +93,7 @@ public class WebServicesAutoConfiguration {
 
 	}
 
-	private static class WsdlDefinitionBeanFactoryPostProcessor
+	static class WsdlDefinitionBeanFactoryPostProcessor
 			implements BeanDefinitionRegistryPostProcessor, ApplicationContextAware {
 
 		private ApplicationContext applicationContext;