Restrict getDeclarablesByType() to Declarable

Author: bjmi

spring-amqp/src/main/java/org/springframework/amqp/core/Declarables.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2021 the original author or authors.
+ * Copyright 2018-2024 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.
@@ -59,7 +59,7 @@ public Collection<Declarable> getDeclarables() {
 	 * @return the filtered list.
 	 * @since 2.2
 	 */
-	public <T> List<T> getDeclarablesByType(Class<T> type) {
+	public <T extends Declarable> List<T> getDeclarablesByType(Class<? extends T> type) {
 		return this.declarables.stream()
 				.filter(type::isInstance)
 				.map(type::cast)