Clean up compiler warnings

spring-context/src/test/java/org/springframework/validation/beanvalidation/BeanValidationBeanRegistrationAotProcessorTests.java

@@ -131,12 +131,14 @@ class BeanValidationBeanRegistrationAotProcessorTests {
 
 	private static class MethodParameterLevelConstraint {
 
+		@SuppressWarnings("unused")
 		public String hello(@Exists String name) {
 			return "Hello " + name;
 		}
 
 	}
 
+	@SuppressWarnings("unused")
 	private static class ConstructorParameterLevelConstraint {
 
 		private final String name;
@@ -151,6 +153,7 @@ class BeanValidationBeanRegistrationAotProcessorTests {
 
 	}
 
+	@SuppressWarnings("unused")
 	private static class PropertyLevelConstraint {
 
 		@Exists

spring-context/src/test/java/org/springframework/validation/beanvalidation/MethodValidationTests.java

@@ -196,7 +196,7 @@ public class MethodValidationTests {
 		public Object invoke(MethodInvocation invocation) throws Throwable {
 			Method method;
 			try {
-				method = ClassUtils.getMethod(MyValidBean.class, invocation.getMethod().getName(), null);
+				method = ClassUtils.getMethod(MyValidBean.class, invocation.getMethod().getName(), (Class<?>[]) null);
 			}
 			catch (IllegalStateException ex) {
 				method = BridgeMethodResolver.findBridgedMethod(

spring-r2dbc/src/main/java/org/springframework/r2dbc/core/ConnectionFunction.java

@@ -22,17 +22,17 @@ import io.r2dbc.spi.Connection;
 
 
 /**
- * Union type combining {@link Function} and {@link SqlProvider} to expose the SQL that is
+ * Union type combining {@link Function} and {@link SqlProvider} to expose the SQL
- * related to the underlying action. The SqlProvider can support lazy / generate once semantics,
+ * that is related to the underlying action. The {@code SqlProvider} can support
- * in which case {@link #getSql()} can be {@code null} until the {@code #apply(Connection)}
+ * lazy / generate-once semantics, in which case {@link #getSql()} can be {@code null}
- * method is invoked.
+ * until the {@code #apply(Connection)} method is invoked.
  *
  * @author Mark Paluch
  * @author Simon Baslé
  * @since 5.3
  * @param <R> the type of the result of the function.
  */
+@SuppressWarnings("rawtypes")
 sealed interface ConnectionFunction<R> extends Function<Connection, R>, SqlProvider
 		permits DelegateConnectionFunction, ResultFunction {
 }
-