Update copyright year to 2021.

Closes #1952

Author: mp911de

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/Path.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2020 the original author or authors.
+ * Copyright 2013-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/StringToLdapNameConverter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2020 the original author or authors.
+ * Copyright 2018-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/UriToEntityConverter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/ValidationErrors.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/annotation/Description.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/annotation/HandleAfterCreate.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/annotation/HandleAfterDelete.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/annotation/HandleAfterLinkDelete.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/annotation/HandleAfterLinkSave.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/annotation/HandleAfterSave.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/annotation/HandleBeforeCreate.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/annotation/HandleBeforeDelete.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/annotation/HandleBeforeLinkDelete.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/annotation/HandleBeforeLinkSave.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/annotation/HandleBeforeSave.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/annotation/RepositoryEventHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/annotation/RepositoryRestResource.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2020 the original author or authors.
+ * Copyright 2014-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/annotation/RestResource.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/config/EntityLookupConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2020 the original author or authors.
+ * Copyright 2015-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/config/EntityLookupRegistrar.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2020 the original author or authors.
+ * Copyright 2015-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/config/EnumTranslationConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2020 the original author or authors.
+ * Copyright 2015-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/config/JsonSchemaFormat.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2020 the original author or authors.
+ * Copyright 2015-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/config/MetadataConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2020 the original author or authors.
+ * Copyright 2014-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/config/Projection.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2020 the original author or authors.
+ * Copyright 2014-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/config/ProjectionDefinitionConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2020 the original author or authors.
+ * Copyright 2014-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/config/RepositoryCorsRegistry.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2020 the original author or authors.
+ * Copyright 2016-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/config/RepositoryRestConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/config/ResourceMapping.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2020 the original author or authors.
+ * Copyright 2013-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/config/ResourceMappingConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2020 the original author or authors.
+ * Copyright 2013-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/event/AbstractRepositoryEventListener.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/event/AnnotatedEventHandlerInvoker.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/event/LinkedEntityEvent.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/event/ValidatingRepositoryEventListener.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/mapping/AnnotationBasedResourceDescription.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2020 the original author or authors.
+ * Copyright 2014-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/mapping/CollectionResourceMapping.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2020 the original author or authors.
+ * Copyright 2013-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/mapping/ComposableFilter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2020 the original author or authors.
+ * Copyright 2018-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/mapping/ConfigurableHttpMethods.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2020 the original author or authors.
+ * Copyright 2018-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/mapping/ConfigurationApplyingSupportedHttpMethodsAdapter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2020 the original author or authors.
+ * Copyright 2018-2021 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.
@@ -23,7 +23,7 @@
 /**
  * Adapter for a {@link SupportedHttpMethods} instance that applies settings made through {@link ExposureConfiguration}
  * to the calculated {@link ConfigurableHttpMethods}
- * 
+ *
  * @author Oliver Gierke
  * @see ExposureConfiguration
  * @since 3.1
@@ -35,7 +35,7 @@ public class ConfigurationApplyingSupportedHttpMethodsAdapter implements Support
 	private final @NonNull ResourceMetadata resourceMetadata;
 	private final @NonNull SupportedHttpMethods delegate;
 
-	/* 
+	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.data.rest.core.mapping.SupportedHttpMethods#getMethodsFor(org.springframework.data.rest.core.mapping.ResourceType)
 	 */
@@ -47,7 +47,7 @@ public HttpMethods getMethodsFor(ResourceType type) {
 		return configuration.filter(ConfigurableHttpMethods.of(methods), type, resourceMetadata);
 	}
 
-	/* 
+	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.data.rest.core.mapping.SupportedHttpMethods#getMethodsFor(org.springframework.data.mapping.PersistentProperty)
 	 */
@@ -66,7 +66,7 @@ public HttpMethods getMethodsFor(PersistentProperty<?> property) {
 		return configuration.filter(methods, PropertyAwareResourceMapping.class.cast(mapping));
 	}
 
-	/* 
+	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.data.rest.core.mapping.SupportedHttpMethods#allowsPutForCreation()
 	 */

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/mapping/CrudMethodsSupportedHttpMethods.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2020 the original author or authors.
+ * Copyright 2014-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/mapping/EvoInflectorTypeBasedCollectionResourceMapping.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2020 the original author or authors.
+ * Copyright 2013-2021 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.

spring-data-rest-core/src/main/java/org/springframework/data/rest/core/mapping/ExposureConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2020 the original author or authors.
+ * Copyright 2018-2021 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.
@@ -28,7 +28,7 @@
  * Configuration type to register filters customizing the HTTP methods supported. By default, filters registered are
  * applied globally. Domain type specific filters can be registered via {@link #forDomainType(Class)}. Useful global
  * shortcuts like {@link #disablePutOnItemResources()} do exist as well.
- * 
+ *
  * @author Oliver Gierke
  * @see #forDomainType(Class)
  * @since 3.1
@@ -92,7 +92,7 @@ public ExposureConfiguration disablePutForCreation() {
 	 * {@link AggregateResourceHttpMethodsFilter} and {@link AssociationResourceHttpMethodsFilter}s which means the
 	 * configured filters will only be invoked for aggregates of the given type and properties owned by that type
 	 * respectively.
-	 * 
+	 *
 	 * @param type must not be {@literal null}.
 	 * @return
 	 */
@@ -104,7 +104,7 @@ public ExposureConfigurer forDomainType(Class<?> type) {
 
 	/**
 	 * Disables the support for {@link HttpMethod#PUT} for item resources.
-	 * 
+	 *
 	 * @return
 	 */
 	public ExposureConfiguration disablePutOnItemResources() {
@@ -115,7 +115,7 @@ public ExposureConfiguration disablePutOnItemResources() {
 
 	/**
 	 * Disables the support for {@link HttpMethod#PATCH} for item resources.
-	 * 
+	 *
 	 * @return
 	 */
 	public ExposureConfiguration disablePatchOnItemResources() {
@@ -127,7 +127,7 @@ public ExposureConfiguration disablePatchOnItemResources() {
 	/**
 	 * Returns whether PUT requests can be used to create new instances for the type backing the given
 	 * {@link ResourceMetadata}.
-	 * 
+	 *
 	 * @param metadata must not be {@literal null}.
 	 * @return
 	 */
@@ -140,7 +140,7 @@ public boolean allowsPutForCreation(ResourceMetadata metadata) {
 
 	/**
 	 * Returns whether PUT requests can be used to create new instances of the given domain type.
-	 * 
+	 *
 	 * @param metadata must not be {@literal null}.
 	 * @return
 	 */
@@ -211,7 +211,7 @@ public ExposureConfigurer withItemExposure(AggregateResourceHttpMethodsFilter fi
 			return this;
 		}
 
-		/* 
+		/*
 		 * (non-Javadoc)
 		 * @see org.springframework.data.rest.core.mapping.ExposureConfiguration.ExposureConfigurer#withAssociationExposure(java.util.function.BiFunction)
 		 */
@@ -229,7 +229,7 @@ public ExposureConfigurer withAssociationExposure(AssociationResourceHttpMethods
 			return this;
 		}
 
-		/* 
+		/*
 		 * (non-Javadoc)
 		 * @see org.springframework.data.rest.core.mapping.ExposureConfigurer#disableCreationViaPut()
 		 */