Why NoAnnotationURLClassLoader.getURLs returns a empty url[]

[hamduke]

/**
* Return an empty URL array to force the RMI marshalling subsystem to
* use the java.server.codebase property as the annotated codebase.
*
* Do not remove this method without discussing it on the dev list.
*
* @return Empty URL[]
*/

I get no idea about the comment,anyone can tell me

[starksm64]

Without this the rmi annotated codebase is a huge and useless file based description of the unified loader repository paths.