Polish: Lambdas should be replaced with method references

spring-webflux/src/main/java/org/springframework/web/reactive/config/WebFluxConfigurerComposite.java

@@ -18,6 +18,7 @@ package org.springframework.web.reactive.config;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Objects;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 
@@ -101,7 +102,7 @@ public class WebFluxConfigurerComposite implements WebFluxConfigurer {
 
 	@Nullable
 	private <T> T createSingleBean(Function<WebFluxConfigurer, T> factory, Class<T> beanType) {
-		List<T> result = this.delegates.stream().map(factory).filter(t -> t != null).collect(Collectors.toList());
+		List<T> result = this.delegates.stream().map(factory).filter(Objects::nonNull).collect(Collectors.toList());
 		if (result.isEmpty()) {
 			return null;
 		}