Use parenthesis with single-arg lambdas

Use regular expression search/replace to ensure all single-arg
lambdas have parenthesis. This aligns with the style used in Spring
Boot and ensure that single-arg and multi-arg lambdas are consistent.

Issue gh-8945

samples/boot/hellorsocket/src/integration-test/java/sample/HelloRSocketApplicationITests.java

@@ -53,7 +53,7 @@ public class HelloRSocketApplicationITests {
 	public void messageWhenAuthenticatedThenSuccess() {
 		UsernamePasswordMetadata credentials = new UsernamePasswordMetadata("user", "password");
 		RSocketRequester requester = this.requester
-				.rsocketStrategies(builder -> builder.encoder(new BasicAuthenticationEncoder()))
+				.rsocketStrategies((builder) -> builder.encoder(new BasicAuthenticationEncoder()))
 				.setupMetadata(credentials, BASIC_AUTHENTICATION_MIME_TYPE)
 				.connectTcp("localhost", this.port)
 				.block();

samples/boot/hellowebflux-method/src/integration-test/java/sample/HelloWebfluxMethodApplicationITests.java

@@ -70,11 +70,11 @@ public class HelloWebfluxMethodApplicationITests {
 	}
 
 	private Consumer<HttpHeaders> robsCredentials() {
-		return httpHeaders -> httpHeaders.setBasicAuth("rob", "rob");
+		return (httpHeaders) -> httpHeaders.setBasicAuth("rob", "rob");
 	}
 
 	private Consumer<HttpHeaders> adminCredentials() {
-		return httpHeaders -> httpHeaders.setBasicAuth("admin", "admin");
+		return (httpHeaders) -> httpHeaders.setBasicAuth("admin", "admin");
 	}
 }
 

samples/boot/hellowebflux-method/src/main/java/sample/SecurityConfig.java

@@ -40,7 +40,7 @@ public class SecurityConfig {
 		return http
 			// Demonstrate that method security works
 			// Best practice to use both for defense in depth
-			.authorizeExchange(exchanges -> exchanges
+			.authorizeExchange((exchanges) -> exchanges
 				.anyExchange().permitAll()
 			)
 			.httpBasic(withDefaults())

samples/boot/hellowebflux-method/src/test/java/sample/HelloWebfluxMethodApplicationTests.java

@@ -123,10 +123,10 @@ public class HelloWebfluxMethodApplicationTests {
 	}
 
 	private Consumer<HttpHeaders> robsCredentials() {
-		return httpHeaders -> httpHeaders.setBasicAuth("rob", "rob");
+		return (httpHeaders) -> httpHeaders.setBasicAuth("rob", "rob");
 	}
 
 	private Consumer<HttpHeaders> adminCredentials() {
-		return httpHeaders -> httpHeaders.setBasicAuth("admin", "admin");
+		return (httpHeaders) -> httpHeaders.setBasicAuth("admin", "admin");
 	}
 }

samples/boot/hellowebflux/src/integration-test/java/sample/HelloWebfluxApplicationITests.java

@@ -69,10 +69,10 @@ public class HelloWebfluxApplicationITests {
 	}
 
 	private Consumer<HttpHeaders> userCredentials() {
-		return httpHeaders -> httpHeaders.setBasicAuth("user", "user");
+		return (httpHeaders) -> httpHeaders.setBasicAuth("user", "user");
 	}
 
 	private Consumer<HttpHeaders> invalidCredentials() {
-		return httpHeaders -> httpHeaders.setBasicAuth("user", "INVALID");
+		return (httpHeaders) -> httpHeaders.setBasicAuth("user", "INVALID");
 	}
 }

samples/boot/hellowebflux/src/test/java/sample/HelloWebfluxApplicationTests.java

@@ -105,10 +105,10 @@ public class HelloWebfluxApplicationTests {
 	}
 
 	private Consumer<HttpHeaders> userCredentials() {
-		return httpHeaders -> httpHeaders.setBasicAuth("user", "user");
+		return (httpHeaders) -> httpHeaders.setBasicAuth("user", "user");
 	}
 
 	private Consumer<HttpHeaders> invalidCredentials() {
-		return httpHeaders -> httpHeaders.setBasicAuth("user", "INVALID");
+		return (httpHeaders) -> httpHeaders.setBasicAuth("user", "INVALID");
 	}
 }

samples/boot/hellowebfluxfn/src/integration-test/java/sample/HelloWebfluxFnApplicationITests.java

@@ -75,10 +75,10 @@ public class HelloWebfluxFnApplicationITests {
 	}
 
 	private Consumer<HttpHeaders> userCredentials() {
-		return httpHeaders -> httpHeaders.setBasicAuth("user", "user");
+		return (httpHeaders) -> httpHeaders.setBasicAuth("user", "user");
 	}
 
 	private Consumer<HttpHeaders> invalidCredentials() {
-		return httpHeaders -> httpHeaders.setBasicAuth("user", "INVALID");
+		return (httpHeaders) -> httpHeaders.setBasicAuth("user", "INVALID");
 	}
 }

samples/boot/hellowebfluxfn/src/main/java/sample/HelloUserController.java

@@ -36,7 +36,7 @@ public class HelloUserController {
 	public Mono<ServerResponse> hello(ServerRequest serverRequest) {
 		return serverRequest.principal()
 			.map(Principal::getName)
-			.flatMap(username ->
+			.flatMap((username) -> 
 				ServerResponse.ok()
 					.contentType(MediaType.APPLICATION_JSON)
 					.syncBody(Collections.singletonMap("message", "Hello " + username + "!"))

samples/boot/hellowebfluxfn/src/test/java/sample/HelloWebfluxFnApplicationTests.java

@@ -106,10 +106,10 @@ public class HelloWebfluxFnApplicationTests {
 	}
 
 	private Consumer<HttpHeaders> userCredentials() {
-		return httpHeaders -> httpHeaders.setBasicAuth("user", "user");
+		return (httpHeaders) -> httpHeaders.setBasicAuth("user", "user");
 	}
 
 	private Consumer<HttpHeaders> invalidCredentials() {
-		return httpHeaders -> httpHeaders.setBasicAuth("user", "INVALID");
+		return (httpHeaders) -> httpHeaders.setBasicAuth("user", "INVALID");
 	}
 }

samples/boot/helloworld/src/main/java/org/springframework/security/samples/config/SecurityConfig.java

@@ -35,11 +35,11 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter {
 	@Override
 	protected void configure(HttpSecurity http) throws Exception {
 		http
-				.authorizeRequests(authorize -> authorize
+				.authorizeRequests((authorize) -> authorize
 					.antMatchers("/css/**", "/index").permitAll()
 					.antMatchers("/user/**").hasRole("USER")
 				)
-				.formLogin(formLogin -> formLogin
+				.formLogin((formLogin) -> formLogin
 					.loginPage("/login")
 					.failureUrl("/login-error")
 				);

samples/boot/oauth2authorizationserver/src/main/java/sample/AuthorizationServerConfiguration.java

@@ -167,7 +167,7 @@ class UserConfig extends WebSecurityConfigurerAdapter {
 				.and()
 			.httpBasic()
 				.and()
-			.csrf().ignoringRequestMatchers(request -> "/introspect".equals(request.getRequestURI()));
+			.csrf().ignoringRequestMatchers((request) -> "/introspect".equals(request.getRequestURI()));
 	}
 
 	@Bean

samples/boot/oauth2login-webflux/src/integration-test/java/sample/OAuth2LoginApplicationTests.java

@@ -46,7 +46,7 @@ public class OAuth2LoginApplicationTests {
 	@Test
 	public void requestWhenMockOidcLoginThenIndex() {
 		this.clientRegistrationRepository.findByRegistrationId("github")
-				.map(clientRegistration ->
+				.map((clientRegistration) -> 
 						this.test.mutateWith(mockOAuth2Login().clientRegistration(clientRegistration))
 							.get().uri("/")
 							.exchange()

samples/boot/oauth2login-webflux/src/test/java/sample/OAuth2LoginControllerTests.java

@@ -65,12 +65,12 @@ public class OAuth2LoginControllerTests {
 					.bindToController(this.controller)
 					.apply(springSecurity())
 					.webFilter(new SecurityContextServerWebExchangeWebFilter())
-					.argumentResolvers(c -> {
+					.argumentResolvers((c) -> {
 						c.addCustomResolver(new AuthenticationPrincipalArgumentResolver(new ReactiveAdapterRegistry()));
 						c.addCustomResolver(new OAuth2AuthorizedClientArgumentResolver
 								(this.clientRegistrationRepository, this.authorizedClientRepository));
 					})
-					.viewResolvers(c -> c.viewResolver(this.viewResolver))
+					.viewResolvers((c) -> c.viewResolver(this.viewResolver))
 					.build();
 		}
 

samples/boot/oauth2login/src/integration-test/java/sample/OAuth2LoginApplicationTests.java

@@ -308,7 +308,7 @@ public class OAuth2LoginApplicationTests {
 
 	private HtmlAnchor getClientAnchorElement(HtmlPage page, ClientRegistration clientRegistration) {
 		Optional<HtmlAnchor> clientAnchorElement = page.getAnchors().stream()
-				.filter(e -> e.asText().equals(clientRegistration.getClientName())).findFirst();
+				.filter((e) -> e.asText().equals(clientRegistration.getClientName())).findFirst();
 
 		return (clientAnchorElement.orElse(null));
 	}
@@ -335,17 +335,17 @@ public class OAuth2LoginApplicationTests {
 		@Override
 		protected void configure(HttpSecurity http) throws Exception {
 			http
-				.authorizeRequests(authorizeRequests ->
+				.authorizeRequests((authorizeRequests) -> 
 					authorizeRequests
 						.anyRequest().authenticated()
 				)
-				.oauth2Login(oauth2Login ->
+				.oauth2Login((oauth2Login) -> 
 					oauth2Login
-						.tokenEndpoint(tokenEndpoint ->
+						.tokenEndpoint((tokenEndpoint) -> 
 							tokenEndpoint
 								.accessTokenResponseClient(this.mockAccessTokenResponseClient())
 						)
-						.userInfoEndpoint(userInfoEndpoint ->
+						.userInfoEndpoint((userInfoEndpoint) -> 
 							userInfoEndpoint
 								.userService(this.mockUserService())
 						)

samples/boot/oauth2login/src/test/java/sample/web/OAuth2LoginControllerTests.java

@@ -63,7 +63,7 @@ public class OAuth2LoginControllerTests {
 
 		this.mvc.perform(get("/").with(oauth2Login()
 				.clientRegistration(clientRegistration)
-				.attributes(a -> a.put("sub", "spring-security"))))
+				.attributes((a) -> a.put("sub", "spring-security"))))
 				.andExpect(model().attribute("userName", "spring-security"))
 				.andExpect(model().attribute("clientName", "my-client-name"))
 				.andExpect(model().attribute("userAttributes", Collections.singletonMap("sub", "spring-security")));

samples/boot/oauth2resourceserver-jwe/src/main/java/sample/OAuth2ResourceServerSecurityConfiguration.java

@@ -69,12 +69,12 @@ public class OAuth2ResourceServerSecurityConfiguration extends WebSecurityConfig
 	protected void configure(HttpSecurity http) throws Exception {
 		// @formatter:off
 		http
-			.authorizeRequests(authorizeRequests ->
+			.authorizeRequests((authorizeRequests) -> 
 				authorizeRequests
 					.antMatchers("/message/**").hasAuthority("SCOPE_message:read")
 					.anyRequest().authenticated()
 			)
-			.oauth2ResourceServer(oauth2ResourceServer ->
+			.oauth2ResourceServer((oauth2ResourceServer) -> 
 				oauth2ResourceServer
 					.jwt(withDefaults())
 			);

samples/boot/oauth2resourceserver-multitenancy/src/main/java/org/springframework/boot/env/MockWebServerPropertySource.java

@@ -156,10 +156,10 @@ public class MockWebServerPropertySource extends PropertySource<MockWebServer> i
 
 		if ("/introspect".equals(request.getPath())) {
 			return Optional.ofNullable(request.getHeader(HttpHeaders.AUTHORIZATION))
-					.filter(authorization -> isAuthorized(authorization, "client", "secret"))
-					.map(authorization -> parseBody(request.getBody()))
-					.map(parameters -> parameters.get("token"))
-					.map(token -> {
+					.filter((authorization) -> isAuthorized(authorization, "client", "secret"))
+					.map((authorization) -> parseBody(request.getBody()))
+					.map((parameters) -> parameters.get("token"))
+					.map((token) -> {
 						if ("00ed5855-1869-47a0-b0c9-0f3ce520aee7".equals(token)) {
 							return NO_SCOPES_RESPONSE;
 						} else if ("b43d1500-c405-4dc9-b9c9-6cfd966c34c9".equals(token)) {
@@ -181,8 +181,8 @@ public class MockWebServerPropertySource extends PropertySource<MockWebServer> i
 
 	private Map<String, Object> parseBody(Buffer body) {
 		return Stream.of(body.readUtf8().split("&"))
-				.map(parameter -> parameter.split("="))
-				.collect(Collectors.toMap(parts -> parts[0], parts -> parts[1]));
+				.map((parameter) -> parameter.split("="))
+				.collect(Collectors.toMap((parts) -> parts[0], (parts) -> parts[1]));
 	}
 
 	private static MockResponse response(String body, int status) {

samples/boot/oauth2resourceserver-multitenancy/src/main/java/sample/OAuth2ResourceServerSecurityConfiguration.java

@@ -37,11 +37,11 @@ public class OAuth2ResourceServerSecurityConfiguration extends WebSecurityConfig
 	protected void configure(HttpSecurity http) throws Exception {
 		// @formatter:off
 		http
-			.authorizeRequests(authz -> authz
+			.authorizeRequests((authz) -> authz
 				.antMatchers("/message/**").hasAuthority("SCOPE_message:read")
 				.anyRequest().authenticated()
 			)
-			.oauth2ResourceServer(oauth2 -> oauth2
+			.oauth2ResourceServer((oauth2) -> oauth2
 				.authenticationManagerResolver(this.authenticationManagerResolver)
 			);
 		// @formatter:on

samples/boot/oauth2resourceserver-opaque/src/main/java/org/springframework/boot/env/MockWebServerPropertySource.java

@@ -142,10 +142,10 @@ public class MockWebServerPropertySource extends PropertySource<MockWebServer> i
 	private MockResponse doDispatch(RecordedRequest request) {
 		if ("/introspect".equals(request.getPath())) {
 			return Optional.ofNullable(request.getHeader(HttpHeaders.AUTHORIZATION))
-					.filter(authorization -> isAuthorized(authorization, "client", "secret"))
-					.map(authorization -> parseBody(request.getBody()))
-					.map(parameters -> parameters.get("token"))
-					.map(token -> {
+					.filter((authorization) -> isAuthorized(authorization, "client", "secret"))
+					.map((authorization) -> parseBody(request.getBody()))
+					.map((parameters) -> parameters.get("token"))
+					.map((token) -> {
 						if ("00ed5855-1869-47a0-b0c9-0f3ce520aee7".equals(token)) {
 							return NO_SCOPES_RESPONSE;
 						} else if ("b43d1500-c405-4dc9-b9c9-6cfd966c34c9".equals(token)) {
@@ -167,8 +167,8 @@ public class MockWebServerPropertySource extends PropertySource<MockWebServer> i
 
 	private Map<String, Object> parseBody(Buffer body) {
 		return Stream.of(body.readUtf8().split("&"))
-				.map(parameter -> parameter.split("="))
-				.collect(Collectors.toMap(parts -> parts[0], parts -> parts[1]));
+				.map((parameter) -> parameter.split("="))
+				.collect(Collectors.toMap((parts) -> parts[0], (parts) -> parts[1]));
 	}
 
 	private static MockResponse response(String body, int status) {

samples/boot/oauth2resourceserver-opaque/src/main/java/sample/OAuth2ResourceServerSecurityConfiguration.java

@@ -36,15 +36,15 @@ public class OAuth2ResourceServerSecurityConfiguration extends WebSecurityConfig
 	protected void configure(HttpSecurity http) throws Exception {
 		// @formatter:off
 		http
-			.authorizeRequests(authorizeRequests ->
+			.authorizeRequests((authorizeRequests) -> 
 				authorizeRequests
 					.antMatchers(HttpMethod.GET, "/message/**").hasAuthority("SCOPE_message:read")
 					.antMatchers(HttpMethod.POST, "/message/**").hasAuthority("SCOPE_message:write")
 					.anyRequest().authenticated()
 			)
-			.oauth2ResourceServer(oauth2ResourceServer ->
+			.oauth2ResourceServer((oauth2ResourceServer) -> 
 				oauth2ResourceServer
-					.opaqueToken(opaqueToken ->
+					.opaqueToken((opaqueToken) -> 
 						opaqueToken
 							.introspectionUri(this.introspectionUri)
 							.introspectionClientCredentials(this.clientId, this.clientSecret)

samples/boot/oauth2resourceserver-opaque/src/test/java/sample/OAuth2ResourceServerControllerTests.java

@@ -46,13 +46,13 @@ public class OAuth2ResourceServerControllerTests {
 
 	@Test
 	public void indexGreetsAuthenticatedUser() throws Exception {
-		this.mvc.perform(get("/").with(opaqueToken().attributes(a -> a.put("sub", "ch4mpy"))))
+		this.mvc.perform(get("/").with(opaqueToken().attributes((a) -> a.put("sub", "ch4mpy"))))
 				.andExpect(content().string(is("Hello, ch4mpy!")));
 	}
 
 	@Test
 	public void messageCanBeReadWithScopeMessageReadAuthority() throws Exception {
-		this.mvc.perform(get("/message").with(opaqueToken().attributes(a -> a.put("scope", "message:read"))))
+		this.mvc.perform(get("/message").with(opaqueToken().attributes((a) -> a.put("scope", "message:read"))))
 				.andExpect(content().string(is("secret message")));
 
 		this.mvc.perform(get("/message")

samples/boot/oauth2resourceserver-static/src/main/java/sample/OAuth2ResourceServerSecurityConfiguration.java

@@ -39,14 +39,14 @@ public class OAuth2ResourceServerSecurityConfiguration extends WebSecurityConfig
 	protected void configure(HttpSecurity http) throws Exception {
 		// @formatter:off
 		http
-			.authorizeRequests(authorizeRequests ->
+			.authorizeRequests((authorizeRequests) -> 
 				authorizeRequests
 					.antMatchers("/message/**").hasAuthority("SCOPE_message:read")
 					.anyRequest().authenticated()
 			)
-			.oauth2ResourceServer(oauth2ResourceServer ->
+			.oauth2ResourceServer((oauth2ResourceServer) -> 
 				oauth2ResourceServer
-					.jwt(jwt ->
+					.jwt((jwt) -> 
 						jwt.decoder(jwtDecoder())
 					)
 			);

samples/boot/oauth2resourceserver-webflux/src/integration-test/java/sample/ServerOAuth2ResourceServerApplicationITests.java

@@ -38,8 +38,8 @@ import static org.hamcrest.Matchers.containsString;
 @RunWith(SpringJUnit4ClassRunner.class)
 public class ServerOAuth2ResourceServerApplicationITests {
 
-	Consumer<HttpHeaders> noScopesToken = http -> http.setBearerAuth("eyJhbGciOiJSUzI1NiJ9.eyJzdWIiOiJzdWJqZWN0IiwiZXhwIjo0NjgzODA1MTI4fQ.ULEPdHG-MK5GlrTQMhgqcyug2brTIZaJIrahUeq9zaiwUSdW83fJ7W1IDd2Z3n4a25JY2uhEcoV95lMfccHR6y_2DLrNvfta22SumY9PEDF2pido54LXG6edIGgarnUbJdR4rpRe_5oRGVa8gDx8FnuZsNv6StSZHAzw5OsuevSTJ1UbJm4UfX3wiahFOQ2OI6G-r5TB2rQNdiPHuNyzG5yznUqRIZ7-GCoMqHMaC-1epKxiX8gYXRROuUYTtcMNa86wh7OVDmvwVmFioRcR58UWBRoO1XQexTtOQq_t8KYsrPZhb9gkyW8x2bAQF-d0J0EJY8JslaH6n4RBaZISww");
-	Consumer<HttpHeaders> messageReadToken = http -> http.setBearerAuth("eyJhbGciOiJSUzI1NiJ9.eyJzdWIiOiJzdWJqZWN0Iiwic2NvcGUiOiJtZXNzYWdlOnJlYWQiLCJleHAiOjQ2ODM4MDUxNDF9.h-j6FKRFdnTdmAueTZCdep45e6DPwqM68ZQ8doIJ1exi9YxAlbWzOwId6Bd0L5YmCmp63gGQgsBUBLzwnZQ8kLUgUOBEC3UzSWGRqMskCY9_k9pX0iomX6IfF3N0PaYs0WPC4hO1s8wfZQ-6hKQ4KigFi13G9LMLdH58PRMK0pKEvs3gCbHJuEPw-K5ORlpdnleUTQIwINafU57cmK3KocTeknPAM_L716sCuSYGvDl6xUTXO7oPdrXhS_EhxLP6KxrpI1uD4Ea_5OWTh7S0Wx5LLDfU6wBG1DowN20d374zepOIEkR-Jnmr_QlR44vmRqS5ncrF-1R0EGcPX49U6A");
+	Consumer<HttpHeaders> noScopesToken = (http) -> http.setBearerAuth("eyJhbGciOiJSUzI1NiJ9.eyJzdWIiOiJzdWJqZWN0IiwiZXhwIjo0NjgzODA1MTI4fQ.ULEPdHG-MK5GlrTQMhgqcyug2brTIZaJIrahUeq9zaiwUSdW83fJ7W1IDd2Z3n4a25JY2uhEcoV95lMfccHR6y_2DLrNvfta22SumY9PEDF2pido54LXG6edIGgarnUbJdR4rpRe_5oRGVa8gDx8FnuZsNv6StSZHAzw5OsuevSTJ1UbJm4UfX3wiahFOQ2OI6G-r5TB2rQNdiPHuNyzG5yznUqRIZ7-GCoMqHMaC-1epKxiX8gYXRROuUYTtcMNa86wh7OVDmvwVmFioRcR58UWBRoO1XQexTtOQq_t8KYsrPZhb9gkyW8x2bAQF-d0J0EJY8JslaH6n4RBaZISww");
+	Consumer<HttpHeaders> messageReadToken = (http) -> http.setBearerAuth("eyJhbGciOiJSUzI1NiJ9.eyJzdWIiOiJzdWJqZWN0Iiwic2NvcGUiOiJtZXNzYWdlOnJlYWQiLCJleHAiOjQ2ODM4MDUxNDF9.h-j6FKRFdnTdmAueTZCdep45e6DPwqM68ZQ8doIJ1exi9YxAlbWzOwId6Bd0L5YmCmp63gGQgsBUBLzwnZQ8kLUgUOBEC3UzSWGRqMskCY9_k9pX0iomX6IfF3N0PaYs0WPC4hO1s8wfZQ-6hKQ4KigFi13G9LMLdH58PRMK0pKEvs3gCbHJuEPw-K5ORlpdnleUTQIwINafU57cmK3KocTeknPAM_L716sCuSYGvDl6xUTXO7oPdrXhS_EhxLP6KxrpI1uD4Ea_5OWTh7S0Wx5LLDfU6wBG1DowN20d374zepOIEkR-Jnmr_QlR44vmRqS5ncrF-1R0EGcPX49U6A");
 
 	@Autowired
 	private WebTestClient rest;

samples/boot/oauth2resourceserver-webflux/src/main/java/sample/SecurityConfig.java

@@ -34,13 +34,13 @@ public class SecurityConfig {
 	@Bean
 	SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
 		http
-			.authorizeExchange(exchanges ->
+			.authorizeExchange((exchanges) -> 
 				exchanges
 					.pathMatchers(HttpMethod.GET, "/message/**").hasAuthority("SCOPE_message:read")
 					.pathMatchers(HttpMethod.POST, "/message/**").hasAuthority("SCOPE_message:write")
 					.anyExchange().authenticated()
 			)
-			.oauth2ResourceServer(oauth2ResourceServer ->
+			.oauth2ResourceServer((oauth2ResourceServer) -> 
 				oauth2ResourceServer
 					.jwt(withDefaults())
 			);

samples/boot/oauth2resourceserver-webflux/src/test/java/sample/OAuth2ResourceServerControllerTests.java

@@ -50,14 +50,14 @@ public class OAuth2ResourceServerControllerTests {
 
 		@Test
 		public void indexGreetsAuthenticatedUser() {
-			this.rest.mutateWith(mockJwt().jwt(jwt -> jwt.subject("test-subject")))
+			this.rest.mutateWith(mockJwt().jwt((jwt) -> jwt.subject("test-subject")))
 					.get().uri("/").exchange()
 					.expectBody(String.class).isEqualTo("Hello, test-subject!");
 		}
 
 		@Test
 		public void messageCanBeReadWithScopeMessageReadAuthority() {
-			this.rest.mutateWith(mockJwt().jwt(jwt -> jwt.claim("scope", "message:read")))
+			this.rest.mutateWith(mockJwt().jwt((jwt) -> jwt.claim("scope", "message:read")))
 					.get().uri("/message").exchange()
 					.expectBody(String.class).isEqualTo("secret message");
 
@@ -78,7 +78,7 @@ public class OAuth2ResourceServerControllerTests {
 			Jwt jwt = jwt().claim("scope", "").build();
 			when(this.jwtDecoder.decode(anyString())).thenReturn(Mono.just(jwt));
 			this.rest.post().uri("/message")
-					.headers(headers -> headers.setBearerAuth(jwt.getTokenValue()))
+					.headers((headers) -> headers.setBearerAuth(jwt.getTokenValue()))
 					.syncBody("Hello message").exchange()
 					.expectStatus().isForbidden();
 		}
@@ -88,7 +88,7 @@ public class OAuth2ResourceServerControllerTests {
 			Jwt jwt = jwt().claim("scope", "message:read").build();
 			when(this.jwtDecoder.decode(anyString())).thenReturn(Mono.just(jwt));
 			this.rest.post().uri("/message")
-					.headers(headers -> headers.setBearerAuth(jwt.getTokenValue()))
+					.headers((headers) -> headers.setBearerAuth(jwt.getTokenValue()))
 					.syncBody("Hello message").exchange()
 					.expectStatus().isForbidden();
 		}
@@ -98,7 +98,7 @@ public class OAuth2ResourceServerControllerTests {
 			Jwt jwt = jwt().claim("scope", "message:write").build();
 			when(this.jwtDecoder.decode(anyString())).thenReturn(Mono.just(jwt));
 			this.rest.post().uri("/message")
-					.headers(headers -> headers.setBearerAuth(jwt.getTokenValue()))
+					.headers((headers) -> headers.setBearerAuth(jwt.getTokenValue()))
 					.syncBody("Hello message").exchange()
 					.expectStatus().isOk()
 					.expectBody(String.class).isEqualTo("Message was created. Content: Hello message");

samples/boot/oauth2resourceserver/src/main/java/sample/OAuth2ResourceServerSecurityConfiguration.java

@@ -38,7 +38,7 @@ public class OAuth2ResourceServerSecurityConfiguration extends WebSecurityConfig
 	protected void configure(HttpSecurity http) throws Exception {
 		// @formatter:off
 		http
-			.authorizeRequests(authorizeRequests ->
+			.authorizeRequests((authorizeRequests) -> 
 				authorizeRequests
 					.antMatchers(HttpMethod.GET, "/message/**").hasAuthority("SCOPE_message:read")
 					.antMatchers(HttpMethod.POST, "/message/**").hasAuthority("SCOPE_message:write")

samples/boot/oauth2resourceserver/src/test/java/sample/OAuth2ResourceServerControllerTests.java

@@ -48,13 +48,13 @@ public class OAuth2ResourceServerControllerTests {
 
 	@Test
 	public void indexGreetsAuthenticatedUser() throws Exception {
-		mockMvc.perform(get("/").with(jwt().jwt(jwt -> jwt.subject("ch4mpy"))))
+		mockMvc.perform(get("/").with(jwt().jwt((jwt) -> jwt.subject("ch4mpy"))))
 				.andExpect(content().string(is("Hello, ch4mpy!")));
 	}
 
 	@Test
 	public void messageCanBeReadWithScopeMessageReadAuthority() throws Exception {
-		mockMvc.perform(get("/message").with(jwt().jwt(jwt -> jwt.claim("scope", "message:read"))))
+		mockMvc.perform(get("/message").with(jwt().jwt((jwt) -> jwt.claim("scope", "message:read"))))
 				.andExpect(content().string(is("secret message")));
 
 		mockMvc.perform(get("/message")
@@ -80,7 +80,7 @@ public class OAuth2ResourceServerControllerTests {
 	public void messageCanNotBeCreatedWithScopeMessageReadAuthority() throws Exception {
 		mockMvc.perform(post("/message")
 				.content("Hello message")
-				.with(jwt().jwt(jwt -> jwt.claim("scope", "message:read"))))
+				.with(jwt().jwt((jwt) -> jwt.claim("scope", "message:read"))))
 				.andExpect(status().isForbidden());
 	}
 
@@ -89,7 +89,7 @@ public class OAuth2ResourceServerControllerTests {
 			throws Exception {
 		mockMvc.perform(post("/message")
 				.content("Hello message")
-				.with(jwt().jwt(jwt -> jwt.claim("scope", "message:write"))))
+				.with(jwt().jwt((jwt) -> jwt.claim("scope", "message:write"))))
 				.andExpect(status().isOk())
 				.andExpect(content().string(is("Message was created. Content: Hello message")));
 	}

samples/boot/oauth2webclient-webflux/src/main/java/sample/config/SecurityConfig.java

@@ -35,7 +35,7 @@ public class SecurityConfig {
 	@Bean
 	SecurityWebFilterChain configure(ServerHttpSecurity http) {
 		http
-			.authorizeExchange(exchanges ->
+			.authorizeExchange((exchanges) -> 
 				exchanges
 					.pathMatchers("/", "/public/**").permitAll()
 					.anyExchange().authenticated()

samples/boot/oauth2webclient/src/main/java/sample/config/SecurityConfig.java

@@ -36,7 +36,7 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter {
 	@Override
 	protected void configure(HttpSecurity http) throws Exception {
 		http
-			.authorizeRequests(authorizeRequests ->
+			.authorizeRequests((authorizeRequests) -> 
 				authorizeRequests
 					.mvcMatchers("/", "/public/**").permitAll()
 					.anyRequest().authenticated()

samples/boot/saml2login/src/integration-test/java/org/springframework/security/saml2/provider/service/authentication/Saml2LoginIntegrationTests.java

@@ -483,7 +483,7 @@ public class Saml2LoginIntegrationTests {
 			String code,
 			Matcher<String> message
 	) {
-		return result -> {
+		return (result) -> {
 			final HttpSession session = result.getRequest().getSession(false);
 			AssertionErrors.assertNotNull("HttpSession", session);
 			Object exception = session.getAttribute(AUTHENTICATION_EXCEPTION);

samples/boot/webflux-form/src/main/java/sample/WebfluxFormSecurityConfig.java

@@ -46,13 +46,13 @@ public class WebfluxFormSecurityConfig {
 	@Bean
 	SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http) {
 		http
-			.authorizeExchange(exchanges ->
+			.authorizeExchange((exchanges) -> 
 				exchanges
 					.pathMatchers("/login").permitAll()
 					.anyExchange().authenticated()
 			)
 			.httpBasic(withDefaults())
-			.formLogin(formLogin ->
+			.formLogin((formLogin) -> 
 				formLogin
 					.loginPage("/login")
 			);

samples/boot/webflux-x509/src/main/java/sample/MeController.java

@@ -35,6 +35,6 @@ public class MeController {
 	public Mono<String> me() {
 		return ReactiveSecurityContextHolder.getContext()
 				.map(SecurityContext::getAuthentication)
-				.map(authentication -> "Hello, " + authentication.getName());
+				.map((authentication) -> "Hello, " + authentication.getName());
 	}
 }

samples/boot/webflux-x509/src/main/java/sample/WebfluxX509Application.java

@@ -46,7 +46,7 @@ public class WebfluxX509Application {
 		// @formatter:off
 		http
 			.x509(withDefaults())
-			.authorizeExchange(exchanges ->
+			.authorizeExchange((exchanges) -> 
 				exchanges
 					.anyExchange().authenticated()
 			);

samples/boot/webflux-x509/src/test/java/sample/WebfluxX509ApplicationTest.java

@@ -55,7 +55,7 @@ public class WebfluxX509ApplicationTest {
 				.exchange()
 				.expectStatus().isOk()
 				.expectBody()
-				.consumeWith(result -> {
+				.consumeWith((result) -> {
 					String responseBody = new String(result.getResponseBody());
 					assertThat(responseBody).contains("Hello, client");
 				});
@@ -79,7 +79,7 @@ public class WebfluxX509ApplicationTest {
 				.trustManager(devCA)
 				.keyManager(clientKey, clientCrt);
 
-		HttpClient httpClient = HttpClient.create().secure(sslContextSpec -> sslContextSpec.sslContext(sslContextBuilder));
+		HttpClient httpClient = HttpClient.create().secure((sslContextSpec) -> sslContextSpec.sslContext(sslContextBuilder));
 		ClientHttpConnector httpConnector = new ReactorClientHttpConnector(httpClient);
 
 		return WebTestClient