https://github.com/spring-projects/spring-framework/blob/1ee9223348c81c903a1d53d3378032beb16c3cbe/spring-webmvc/src/main/java/org/springframework/web/servlet/config/annotation/WebMvcConfigurationSupport.java#L543-L572
I update javadoc comment because RouterFunctionMapping was missing.
Comment From: sbrannen
This has been merged into master.
Thanks