Add create static factory method to WebClientAdapter

Closes gh-31120

Author: rstoyanchev

Diff for: spring-webflux/src/main/java/org/springframework/web/reactive/function/client/support/WebClientAdapter.java

@@ -138,7 +138,20 @@ else if (requestValues instanceof ReactiveHttpRequestValues reactiveRequestValue
 	 * Create a {@link WebClientAdapter} for the given {@code WebClient} instance.
 	 * @param webClient the client to use
 	 * @return the created adapter instance
+	 * @since 6.1
 	 */
+	public static WebClientAdapter create(WebClient webClient) {
+		return new WebClientAdapter(webClient);
+	}
+
+	/**
+	 * Create a {@link WebClientAdapter} for the given {@code WebClient} instance.
+	 * @param webClient the client to use
+	 * @return the created adapter instance
+	 * @deprecated in favor of {@link #create(WebClient)} aligning with other adapter
+	 * implementations; to be removed in 6.2.
+	 */
+	@Deprecated(since = "6.1", forRemoval = true)
 	public static WebClientAdapter forClient(WebClient webClient) {
 		return new WebClientAdapter(webClient);
 	}

Diff for: spring-webflux/src/test/java/org/springframework/web/reactive/function/client/support/WebClientAdapterTests.java

@@ -163,7 +163,7 @@ private Service initService() {
 	}
 
 	private Service initService(WebClient webClient) {
-		WebClientAdapter adapter = WebClientAdapter.forClient(webClient);
+		WebClientAdapter adapter = WebClientAdapter.create(webClient);
 		return HttpServiceProxyFactory.builderFor(adapter).build().createClient(Service.class);
 	}
 

Diff for: spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/support/WebClientHttpServiceProxyKotlinTests.kt

@@ -128,7 +128,7 @@ class KotlinWebClientHttpServiceProxyTests {
 	}
 
 	private fun initHttpService(webClient: WebClient): TestHttpService {
-		val adapter = WebClientAdapter.forClient(webClient)
+		val adapter = WebClientAdapter.create(webClient)
 		return HttpServiceProxyFactory.builderFor(adapter).build().createClient()
 	}