Remove deprecated Endpoint ID methods

See gh-14773

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/endpoint/web/MappingWebEndpointPathMapper.java

@@ -38,12 +38,6 @@ class MappingWebEndpointPathMapper implements PathMapper {
 				.put(EndpointId.fromPropertyValue(id), path));
 	}
 
-	@Override
-	@Deprecated
-	public String getRootPath(String endpointId) {
-		return getRootPath(EndpointId.of(endpointId));
-	}
-
 	@Override
 	public String getRootPath(EndpointId endpointId) {
 		return this.pathMapping.getOrDefault(endpointId, endpointId.toLowerCaseString());

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/cloudfoundry/CloudFoundryWebEndpointDiscovererTests.java

@@ -80,7 +80,7 @@ public class CloudFoundryWebEndpointDiscovererTests {
 
 	private void load(Class<?> configuration,
 			Consumer<CloudFoundryWebEndpointDiscoverer> consumer) {
-		this.load((id) -> null, (id) -> id, configuration, consumer);
+		this.load((id) -> null, (id) -> id.toString(), configuration, consumer);
 	}
 
 	private void load(Function<EndpointId, Long> timeToLive,

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/AbstractExposableEndpoint.java

@@ -44,21 +44,6 @@ public abstract class AbstractExposableEndpoint<O extends Operation>
 	 * @param id the endpoint id
 	 * @param enabledByDefault if the endpoint is enabled by default
 	 * @param operations the endpoint operations
-	 * @deprecated since 2.0.6 in favor of
-	 * {@link #AbstractExposableEndpoint(EndpointId, boolean, Collection)}
-	 */
-	@Deprecated
-	public AbstractExposableEndpoint(String id, boolean enabledByDefault,
-			Collection<? extends O> operations) {
-		this(EndpointId.of(id), enabledByDefault, operations);
-	}
-
-	/**
-	 * Create a new {@link AbstractExposableEndpoint} instance.
-	 * @param id the endpoint id
-	 * @param enabledByDefault if the endpoint is enabled by default
-	 * @param operations the endpoint operations
-	 * @since 2.0.6
 	 */
 	public AbstractExposableEndpoint(EndpointId id, boolean enabledByDefault,
 			Collection<? extends O> operations) {
@@ -70,8 +55,8 @@ public abstract class AbstractExposableEndpoint<O extends Operation>
 	}
 
 	@Override
-	public String getId() {
+	public EndpointId getEndpointId() {
-		return this.id.toString();
+		return this.id;
 	}
 
 	@Override

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/ExposableEndpoint.java

@@ -28,22 +28,11 @@ import java.util.Collection;
  */
 public interface ExposableEndpoint<O extends Operation> {
 
-	/**
-	 * Returns the id of the endpoint.
-	 * @return the id
-	 * @deprecated since 2.0.6 in favor of {@link #getEndpointId()}
-	 */
-	@Deprecated
-	String getId();
-
 	/**
 	 * Return the endpoint ID.
 	 * @return the endpoint ID
-	 * @since 2.0.6
 	 */
-	default EndpointId getEndpointId() {
+	EndpointId getEndpointId();
-		return EndpointId.of(getId());
-	}
 
 	/**
 	 * Returns if the endpoint is enabled by default.

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/annotation/AbstractDiscoveredEndpoint.java

@@ -47,24 +47,6 @@ public abstract class AbstractDiscoveredEndpoint<O extends Operation>
 	 * @param id the ID of the endpoint
 	 * @param enabledByDefault if the endpoint is enabled by default
 	 * @param operations the endpoint operations
-	 * @deprecated since 2.0.6 in favor of
-	 * {@link #AbstractDiscoveredEndpoint(EndpointDiscoverer, Object, EndpointId, boolean, Collection)}
-	 */
-	@Deprecated
-	public AbstractDiscoveredEndpoint(EndpointDiscoverer<?, ?> discoverer,
-			Object endpointBean, String id, boolean enabledByDefault,
-			Collection<? extends O> operations) {
-		this(discoverer, endpointBean, EndpointId.of(id), enabledByDefault, operations);
-	}
-
-	/**
-	 * Create a new {@link AbstractDiscoveredEndpoint} instance.
-	 * @param discoverer the discoverer that discovered the endpoint
-	 * @param endpointBean the primary source bean
-	 * @param id the ID of the endpoint
-	 * @param enabledByDefault if the endpoint is enabled by default
-	 * @param operations the endpoint operations
-	 * @since 2.0.6
 	 */
 	public AbstractDiscoveredEndpoint(EndpointDiscoverer<?, ?> discoverer,
 			Object endpointBean, EndpointId id, boolean enabledByDefault,

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/annotation/EndpointDiscoverer.java

@@ -340,26 +340,8 @@ public abstract class EndpointDiscoverer<E extends ExposableEndpoint<O>, O exten
 	 * @param enabledByDefault if the endpoint is enabled by default
 	 * @param operations the endpoint operations
 	 * @return a created endpoint (a {@link DiscoveredEndpoint} is recommended)
-	 * @since 2.0.6
 	 */
-	protected E createEndpoint(Object endpointBean, EndpointId id,
+	protected abstract E createEndpoint(Object endpointBean, EndpointId id,
-			boolean enabledByDefault, Collection<O> operations) {
-		return createEndpoint(endpointBean, (id != null) ? id.toString() : null,
-				enabledByDefault, operations);
-	}
-
-	/**
-	 * Factory method called to create the {@link ExposableEndpoint endpoint}.
-	 * @param endpointBean the source endpoint bean
-	 * @param id the ID of the endpoint
-	 * @param enabledByDefault if the endpoint is enabled by default
-	 * @param operations the endpoint operations
-	 * @return a created endpoint (a {@link DiscoveredEndpoint} is recommended)
-	 * @deprecated Since 2.0.6 in favor of
-	 * {@link #createEndpoint(Object, EndpointId, boolean, Collection)}
-	 */
-	@Deprecated
-	protected abstract E createEndpoint(Object endpointBean, String id,
 			boolean enabledByDefault, Collection<O> operations);
 
 	/**
@@ -368,25 +350,8 @@ public abstract class EndpointDiscoverer<E extends ExposableEndpoint<O>, O exten
 	 * @param operationMethod the operation method
 	 * @param invoker the invoker to use
 	 * @return a created operation
-	 * @since 2.0.6
-	 */
-	protected O createOperation(EndpointId endpointId,
-			DiscoveredOperationMethod operationMethod, OperationInvoker invoker) {
-		return createOperation((endpointId != null) ? endpointId.toString() : null,
-				operationMethod, invoker);
-	}
-
-	/**
-	 * Factory method to create an {@link Operation endpoint operation}.
-	 * @param endpointId the endpoint id
-	 * @param operationMethod the operation method
-	 * @param invoker the invoker to use
-	 * @return a created operation
-	 * @deprecated since 2.0.6 in favor of
-	 * {@link #createOperation(EndpointId, DiscoveredOperationMethod, OperationInvoker)}
 	 */
-	@Deprecated
+	protected abstract O createOperation(EndpointId endpointId,
-	protected abstract O createOperation(String endpointId,
 			DiscoveredOperationMethod operationMethod, OperationInvoker invoker);
 
 	/**

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/invoke/OperationInvokerAdvisor.java

@@ -35,26 +35,8 @@ public interface OperationInvokerAdvisor {
 	 * @param parameters the operation parameters
 	 * @param invoker the invoker to advise
 	 * @return an potentially new operation invoker with support for additional features
-	 * @since 2.0.6
 	 */
-	default OperationInvoker apply(EndpointId endpointId, OperationType operationType,
+	OperationInvoker apply(EndpointId endpointId, OperationType operationType,
-			OperationParameters parameters, OperationInvoker invoker) {
-		return apply((endpointId != null) ? endpointId.toString() : null, operationType,
-				parameters, invoker);
-	}
-
-	/**
-	 * Apply additional functionality to the given invoker.
-	 * @param endpointId the endpoint ID
-	 * @param operationType the operation type
-	 * @param parameters the operation parameters
-	 * @param invoker the invoker to advise
-	 * @return an potentially new operation invoker with support for additional features
-	 * @deprecated since 2.0.6 in favor of
-	 * {@link #apply(EndpointId, OperationType, OperationParameters, OperationInvoker)}
-	 */
-	@Deprecated
-	OperationInvoker apply(String endpointId, OperationType operationType,
 			OperationParameters parameters, OperationInvoker invoker);
 
 }

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/invoker/cache/CachingOperationInvokerAdvisor.java

@@ -41,13 +41,6 @@ public class CachingOperationInvokerAdvisor implements OperationInvokerAdvisor {
 		this.endpointIdTimeToLive = endpointIdTimeToLive;
 	}
 
-	@Override
-	@Deprecated
-	public OperationInvoker apply(String endpointId, OperationType operationType,
-			OperationParameters parameters, OperationInvoker invoker) {
-		return apply(EndpointId.of(endpointId), operationType, parameters, invoker);
-	}
-
 	@Override
 	public OperationInvoker apply(EndpointId endpointId, OperationType operationType,
 			OperationParameters parameters, OperationInvoker invoker) {

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/jmx/annotation/JmxEndpointDiscoverer.java

@@ -54,14 +54,6 @@ public class JmxEndpointDiscoverer
 		super(applicationContext, parameterValueMapper, invokerAdvisors, filters);
 	}
 
-	@Override
-	@Deprecated
-	protected ExposableJmxEndpoint createEndpoint(Object endpointBean, String id,
-			boolean enabledByDefault, Collection<JmxOperation> operations) {
-		return createEndpoint(endpointBean, EndpointId.of(id), enabledByDefault,
-				operations);
-	}
-
 	@Override
 	protected ExposableJmxEndpoint createEndpoint(Object endpointBean, EndpointId id,
 			boolean enabledByDefault, Collection<JmxOperation> operations) {
@@ -69,13 +61,6 @@ public class JmxEndpointDiscoverer
 				operations);
 	}
 
-	@Override
-	@Deprecated
-	protected JmxOperation createOperation(String endpointId,
-			DiscoveredOperationMethod operationMethod, OperationInvoker invoker) {
-		return createOperation(EndpointId.of(endpointId), operationMethod, invoker);
-	}
-
 	@Override
 	protected JmxOperation createOperation(EndpointId endpointId,
 			DiscoveredOperationMethod operationMethod, OperationInvoker invoker) {

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/web/PathMappedEndpoints.java

@@ -90,19 +90,6 @@ public class PathMappedEndpoints implements Iterable<PathMappedEndpoint> {
 	 * endpoint cannot be found.
 	 * @param endpointId the endpoint ID
 	 * @return the root path or {@code null}
-	 * @deprecated since 2.0.6 in favor of {@link #getRootPath(EndpointId)}
-	 */
-	@Deprecated
-	public String getRootPath(String endpointId) {
-		return getRootPath(EndpointId.of(endpointId));
-	}
-
-	/**
-	 * Return the root path for the endpoint with the given ID or {@code null} if the
-	 * endpoint cannot be found.
-	 * @param endpointId the endpoint ID
-	 * @return the root path or {@code null}
-	 * @since 2.0.6
 	 */
 	public String getRootPath(EndpointId endpointId) {
 		PathMappedEndpoint endpoint = getEndpoint(endpointId);
@@ -114,19 +101,6 @@ public class PathMappedEndpoints implements Iterable<PathMappedEndpoint> {
 	 * endpoint cannot be found.
 	 * @param endpointId the endpoint ID
 	 * @return the full path or {@code null}
-	 * @deprecated since 2.0.6 in favor of {@link #getPath(EndpointId)}
-	 */
-	@Deprecated
-	public String getPath(String endpointId) {
-		return getPath(EndpointId.of(endpointId));
-	}
-
-	/**
-	 * Return the full path for the endpoint with the given ID or {@code null} if the
-	 * endpoint cannot be found.
-	 * @param endpointId the endpoint ID
-	 * @return the full path or {@code null}
-	 * @since 2.0.6
 	 */
 	public String getPath(EndpointId endpointId) {
 		return getPath(getEndpoint(endpointId));
@@ -153,19 +127,6 @@ public class PathMappedEndpoints implements Iterable<PathMappedEndpoint> {
 	 * endpoint cannot be found.
 	 * @param endpointId the endpoint ID
 	 * @return the path mapped endpoint or {@code null}
-	 * @deprecated since 2.0.6 in favor of {@link #getEndpoint(EndpointId)}
-	 */
-	@Deprecated
-	public PathMappedEndpoint getEndpoint(String endpointId) {
-		return getEndpoint(EndpointId.of(endpointId));
-	}
-
-	/**
-	 * Return the {@link PathMappedEndpoint} with the given ID or {@code null} if the
-	 * endpoint cannot be found.
-	 * @param endpointId the endpoint ID
-	 * @return the path mapped endpoint or {@code null}
-	 * @since 2.0.6
 	 */
 	public PathMappedEndpoint getEndpoint(EndpointId endpointId) {
 		return this.endpoints.get(endpointId);

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/web/PathMapper.java

@@ -33,40 +33,15 @@ public interface PathMapper {
 	 * Resolve the root path for the endpoint with the specified {@code endpointId}.
 	 * @param endpointId the id of an endpoint
 	 * @return the path of the endpoint
-	 * @since 2.0.6
 	 */
-	default String getRootPath(EndpointId endpointId) {
+	String getRootPath(EndpointId endpointId);
-		return getRootPath((endpointId != null) ? endpointId.toString() : null);
-	}
-
-	/**
-	 * Resolve the root path for the endpoint with the specified {@code endpointId}.
-	 * @param endpointId the id of an endpoint
-	 * @return the path of the endpoint
-	 * @deprecated since 2.0.6 in favor of {@link #getRootPath(EndpointId)}
-	 */
-	@Deprecated
-	String getRootPath(String endpointId);
 
 	/**
 	 * Returns an {@link PathMapper} that uses the endpoint ID as the path.
 	 * @return an {@link PathMapper} that uses the lowercase endpoint ID as the path
 	 */
 	static PathMapper useEndpointId() {
-		return new PathMapper() {
+		return (id) -> id.toLowerCaseString();
-
-			@Override
-			@Deprecated
-			public String getRootPath(String endpointId) {
-				return getRootPath(EndpointId.of(endpointId));
-			}
-
-			@Override
-			public String getRootPath(EndpointId endpointId) {
-				return endpointId.toLowerCaseString();
-			}
-
-		};
 
 	}
 

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/web/annotation/ControllerEndpointDiscoverer.java

@@ -67,14 +67,6 @@ public class ControllerEndpointDiscoverer
 				|| AnnotatedElementUtils.isAnnotated(type, RestControllerEndpoint.class);
 	}
 
-	@Override
-	@Deprecated
-	protected ExposableControllerEndpoint createEndpoint(Object endpointBean, String id,
-			boolean enabledByDefault, Collection<Operation> operations) {
-		return createEndpoint(endpointBean, (id != null) ? EndpointId.of(id) : null,
-				enabledByDefault, operations);
-	}
-
 	@Override
 	protected ExposableControllerEndpoint createEndpoint(Object endpointBean,
 			EndpointId id, boolean enabledByDefault, Collection<Operation> operations) {
@@ -83,13 +75,6 @@ public class ControllerEndpointDiscoverer
 				enabledByDefault);
 	}
 
-	@Override
-	@Deprecated
-	protected Operation createOperation(String endpointId,
-			DiscoveredOperationMethod operationMethod, OperationInvoker invoker) {
-		return createOperation(EndpointId.of(endpointId), operationMethod, invoker);
-	}
-
 	@Override
 	protected Operation createOperation(EndpointId endpointId,
 			DiscoveredOperationMethod operationMethod, OperationInvoker invoker) {

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/web/annotation/ServletEndpointDiscoverer.java

@@ -66,14 +66,6 @@ public class ServletEndpointDiscoverer
 		return AnnotatedElementUtils.isAnnotated(type, ServletEndpoint.class);
 	}
 
-	@Override
-	@Deprecated
-	protected ExposableServletEndpoint createEndpoint(Object endpointBean, String id,
-			boolean enabledByDefault, Collection<Operation> operations) {
-		return createEndpoint(endpointBean, EndpointId.of(id), enabledByDefault,
-				operations);
-	}
-
 	@Override
 	protected ExposableServletEndpoint createEndpoint(Object endpointBean, EndpointId id,
 			boolean enabledByDefault, Collection<Operation> operations) {
@@ -82,13 +74,6 @@ public class ServletEndpointDiscoverer
 				enabledByDefault);
 	}
 
-	@Override
-	@Deprecated
-	protected Operation createOperation(String endpointId,
-			DiscoveredOperationMethod operationMethod, OperationInvoker invoker) {
-		return createOperation(EndpointId.of(endpointId), operationMethod, invoker);
-	}
-
 	@Override
 	protected Operation createOperation(EndpointId endpointId,
 			DiscoveredOperationMethod operationMethod, OperationInvoker invoker) {

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/web/annotation/WebEndpointDiscoverer.java

@@ -68,14 +68,6 @@ public class WebEndpointDiscoverer
 		this.requestPredicateFactory = new RequestPredicateFactory(endpointMediaTypes);
 	}
 
-	@Override
-	@Deprecated
-	protected ExposableWebEndpoint createEndpoint(Object endpointBean, String id,
-			boolean enabledByDefault, Collection<WebOperation> operations) {
-		return createEndpoint(endpointBean, EndpointId.of(id), enabledByDefault,
-				operations);
-	}
-
 	@Override
 	protected ExposableWebEndpoint createEndpoint(Object endpointBean, EndpointId id,
 			boolean enabledByDefault, Collection<WebOperation> operations) {
@@ -84,13 +76,6 @@ public class WebEndpointDiscoverer
 				enabledByDefault, operations);
 	}
 
-	@Override
-	@Deprecated
-	protected WebOperation createOperation(String endpointId,
-			DiscoveredOperationMethod operationMethod, OperationInvoker invoker) {
-		return createOperation(EndpointId.of(endpointId), operationMethod, invoker);
-	}
-
 	@Override
 	protected WebOperation createOperation(EndpointId endpointId,
 			DiscoveredOperationMethod operationMethod, OperationInvoker invoker) {

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/annotation/DiscoveredOperationsFactoryTests.java

@@ -223,13 +223,6 @@ public class DiscoveredOperationsFactoryTests {
 			return invoker;
 		}
 
-		@Override
-		@Deprecated
-		public OperationInvoker apply(String endpointId, OperationType operationType,
-				OperationParameters parameters, OperationInvoker invoker) {
-			throw new IllegalStateException();
-		}
-
 		public EndpointId getEndpointId() {
 			return this.endpointId;
 		}

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/annotation/EndpointDiscovererTests.java

@@ -263,8 +263,8 @@ public class EndpointDiscovererTests {
 	public void getEndpointsShouldApplyFilters() {
 		load(SpecializedEndpointsConfiguration.class, (context) -> {
 			EndpointFilter<SpecializedExposableEndpoint> filter = (endpoint) -> {
-				String id = endpoint.getId();
+				EndpointId id = endpoint.getEndpointId();
-				return !id.equals("specialized");
+				return !id.equals(EndpointId.of("specialized"));
 			};
 			SpecializedEndpointDiscoverer discoverer = new SpecializedEndpointDiscoverer(
 					context, Collections.singleton(filter));
@@ -519,12 +519,6 @@ public class EndpointDiscovererTests {
 			super(applicationContext, parameterValueMapper, invokerAdvisors, filters);
 		}
 
-		@Override
-		protected TestExposableEndpoint createEndpoint(Object endpointBean, String id,
-				boolean enabledByDefault, Collection<TestOperation> operations) {
-			throw new IllegalStateException();
-		}
-
 		@Override
 		protected TestExposableEndpoint createEndpoint(Object endpointBean, EndpointId id,
 				boolean enabledByDefault, Collection<TestOperation> operations) {
@@ -533,7 +527,7 @@ public class EndpointDiscovererTests {
 		}
 
 		@Override
-		protected TestOperation createOperation(String endpointId,
+		protected TestOperation createOperation(EndpointId endpointId,
 				DiscoveredOperationMethod operationMethod, OperationInvoker invoker) {
 			return new TestOperation(operationMethod, invoker);
 		}
@@ -559,13 +553,6 @@ public class EndpointDiscovererTests {
 					Collections.emptyList(), filters);
 		}
 
-		@Override
-		protected SpecializedExposableEndpoint createEndpoint(Object endpointBean,
-				String id, boolean enabledByDefault,
-				Collection<SpecializedOperation> operations) {
-			throw new IllegalStateException();
-		}
-
 		@Override
 		protected SpecializedExposableEndpoint createEndpoint(Object endpointBean,
 				EndpointId id, boolean enabledByDefault,
@@ -575,7 +562,7 @@ public class EndpointDiscovererTests {
 		}
 
 		@Override
-		protected SpecializedOperation createOperation(String endpointId,
+		protected SpecializedOperation createOperation(EndpointId endpointId,
 				DiscoveredOperationMethod operationMethod, OperationInvoker invoker) {
 			return new SpecializedOperation(operationMethod, invoker);
 		}

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/jmx/TestExposableJmxEndpoint.java

@@ -19,6 +19,8 @@ package org.springframework.boot.actuate.endpoint.jmx;
 import java.util.Arrays;
 import java.util.Collection;
 
+import org.springframework.boot.actuate.endpoint.EndpointId;
+
 /**
  * Test {@link ExposableJmxEndpoint} implementation.
  *
@@ -37,8 +39,8 @@ public class TestExposableJmxEndpoint implements ExposableJmxEndpoint {
 	}
 
 	@Override
-	public String getId() {
+	public EndpointId getEndpointId() {
-		return "test";
+		return EndpointId.of("test");
 	}
 
 	@Override

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/web/annotation/WebEndpointDiscovererTests.java

@@ -182,18 +182,19 @@ public class WebEndpointDiscovererTests {
 
 	@Test
 	public void getEndpointsWhenHasCacheWithTtlShouldCacheReadOperationWithTtlValue() {
-		load((id) -> 500L, (id) -> id, TestEndpointConfiguration.class, (discoverer) -> {
+		load((id) -> 500L, (id) -> id.toString(), TestEndpointConfiguration.class,
-			Map<EndpointId, ExposableWebEndpoint> endpoints = mapEndpoints(
+				(discoverer) -> {
-					discoverer.getEndpoints());
+					Map<EndpointId, ExposableWebEndpoint> endpoints = mapEndpoints(
-			assertThat(endpoints).containsOnlyKeys(EndpointId.of("test"));
+							discoverer.getEndpoints());
-			ExposableWebEndpoint endpoint = endpoints.get(EndpointId.of("test"));
+					assertThat(endpoints).containsOnlyKeys(EndpointId.of("test"));
-			assertThat(endpoint.getOperations()).hasSize(1);
+					ExposableWebEndpoint endpoint = endpoints.get(EndpointId.of("test"));
-			WebOperation operation = endpoint.getOperations().iterator().next();
+					assertThat(endpoint.getOperations()).hasSize(1);
-			Object invoker = ReflectionTestUtils.getField(operation, "invoker");
+					WebOperation operation = endpoint.getOperations().iterator().next();
-			assertThat(invoker).isInstanceOf(CachingOperationInvoker.class);
+					Object invoker = ReflectionTestUtils.getField(operation, "invoker");
-			assertThat(((CachingOperationInvoker) invoker).getTimeToLive())
+					assertThat(invoker).isInstanceOf(CachingOperationInvoker.class);
-					.isEqualTo(500);
+					assertThat(((CachingOperationInvoker) invoker).getTimeToLive())
-		});
+							.isEqualTo(500);
+				});
 	}
 
 	@Test
@@ -245,7 +246,7 @@ public class WebEndpointDiscovererTests {
 	}
 
 	private void load(Class<?> configuration, Consumer<WebEndpointDiscoverer> consumer) {
-		this.load((id) -> null, (id) -> id, configuration, consumer);
+		this.load((id) -> null, (id) -> id.toString(), configuration, consumer);
 	}
 
 	private void load(Function<EndpointId, Long> timeToLive,