Document Spring Data Neo4j 6 support

Closes gh-22652

spring-boot-project/spring-boot-docs/src/docs/asciidoc/spring-boot-features.adoc

@@ -4527,9 +4527,10 @@ Each will be called in order with the `ConfigBuilder` that is used to build the
 [[boot-features-spring-data-neo4j-repositories]]
 ==== Spring Data Neo4j Repositories
 Spring Data includes repository support for Neo4j.
+For complete details of Spring Data Neo4j, refer to the {spring-data-neo4j-docs}[reference documentation].
 
 Spring Data Neo4j shares the common infrastructure with Spring Data JPA as many other Spring Data modules do.
-You could take the JPA example from earlier and define `City` as Neo4j OGM `@NodeEntity` rather than JPA `@Entity` and the repository abstraction works in the same way, as shown in the following example:
+You could take the JPA example from earlier and define `City` as Spring Data Neo4j `@Node` rather than JPA `@Entity` and the repository abstraction works in the same way, as shown in the following example:
 
 [source,java,indent=0]
 ----
@@ -4547,9 +4548,10 @@ You could take the JPA example from earlier and define `City` as Neo4j OGM `@Nod
 ----
 
 The `spring-boot-starter-data-neo4j` "`Starter`" enables the repository support as well as transaction management.
-You can customize the locations to look for repositories and entities by using `@EnableNeo4jRepositories` and `@EntityScan` respectively on a `@Configuration`-bean.
+Spring Boot supports both classic and reactive Neo4j repositories, using the `Neo4jTemplate` or `ReactiveNeo4jTemplate` beans.
+When Project Reactor is available on the classpath, the reactive style is also auto-configured.
 
-TIP: For complete details of Spring Data Neo4j, including its object mapping technologies, refer to the {spring-data-neo4j-docs}[reference documentation].
+You can customize the locations to look for repositories and entities by using `@EnableNeo4jRepositories` and `@EntityScan` respectively on a `@Configuration`-bean.
 
 
 
@@ -7152,7 +7154,7 @@ If, however, you prefer to run tests against a real MongoDB server, you should e
 [[boot-features-testing-spring-boot-applications-testing-autoconfigured-neo4j-test]]
 ==== Auto-configured Data Neo4j Tests
 You can use `@DataNeo4jTest` to test Neo4j applications.
-By default, it uses an in-memory embedded Neo4j (if the embedded driver is available), scans for `@NodeEntity` classes, and configures Spring Data Neo4j repositories.
+By default, it scans for `@Node` classes, and configures Spring Data Neo4j repositories.
 Regular `@Component` beans are not loaded into the `ApplicationContext`.
 (For more about using Neo4J with Spring Boot, see "<<boot-features-neo4j>>", earlier in this chapter.)
 

spring-boot-project/spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/data/neo4j/DataNeo4jTest.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.
@@ -44,9 +44,8 @@ import org.springframework.transaction.annotation.Transactional;
  * Using this annotation will disable full auto-configuration and instead apply only
  * configuration relevant to Neo4j tests.
  * <p>
- * By default, tests annotated with {@code @DataNeo4jTest} will use an embedded in-memory
- * Neo4j process (if available). They will also be transactional with the usual
- * test-related semantics (i.e. rollback by default).
+ * By default, tests annotated with {@code @DataNeo4jTest} are transactional with the
+ * usual test-related semantics (i.e. rollback by default).
  * <p>
  * When using JUnit 4, this annotation should be used in combination with
  * {@code @RunWith(SpringRunner.class)}.