TODO: update comment - CWA is sooo old ;)
Bean Interface describes the request which is given to CWA for retrieval. It will at the
minimum contain a reference to the actual servletrequest (with references to request parameters,
headers, etc), but is here mostly to be expanded in implementations.
For instance, adding an authenticated User doing the request would be useful when determining
if said user has access to secure content - proving the security filter with whatever input
required to match authorisation to authentication supplied by a controller.