JAX-RS 1.1 introduces @ApplicationPath annotation as a portable way of specifying JAX-RS implementation servlet mapping (i.e. @ApplicationPath("/rest"))
Furthermore, since JAX-RS 1.1 Application subclass whose methods return empty sets indicates that some kind of classpath scanning should be performed and all the resources and providers registered.

We should support these features as soon as possible as it allows fast and straightforward startup of an application (unlike context parameters, etc...)